Hello,
I just tried the new 4.14.1 Windows version on my laptop and I have a bug:
Lenovo 330-15IKB Touch
CPU:I5-8250U
Windows 10 Home Version:22H2 Build:19045.5555
Program installs fine and it will open the app just fine, except when loading any of my project files, which worked fine in version 4.13.1 and older. The only project file a can open just fine is the Sample project.
-Launching with -o to file path of my project files creates an immediate crash.
-Launching without any arguments is good, but when opening project file after creates an immediate crash.
As the file loads, the app will immediately close itself with no errors given, it just disappears. My latest project file is very complex, but even some older versions of my project files are crashing. Unfortunely, I don't have any good project files that are more basic to test. Again, the only project file a can successfully load is the Sample.qwx.
As for my troubleshooting. I reinstalled 4.13.1 unchecked all my Inputs/Outputs on my 13 Universes to clear it all up. Resaved. Installed 4.14.1. Tried to open the new saved project that has no linked Input/Output and it still crashes immediately as it loads. I appreciate the help to get this working. I am most interested in the new websocket changes. I currently have an issue related to the 4.13.1 websocket connection to Bitfocus Companion that I hope resolves.
New QLC+ Version 4.14.1 Immediate Crash With My Old Projects
- mcallegari
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Without a project to reproduce the crash I cannot help, sorry.
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- Real Name: mohammad
I have the same problem, my old projects won't open with version 4.14.1.
But if I delete the scripts, it opens the project.
But if I delete the scripts, it opens the project.
- GGGss
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- Real Name: Fredje Gallon
No problem to report here...
I uninstalled the old version, installed it under administrator and ran QLC+ under admin rights. The old project opened without problems.
(I don't have perifery at my disposal right now.)
I uninstalled the old version, installed it under administrator and ran QLC+ under admin rights. The old project opened without problems.
(I don't have perifery at my disposal right now.)
All electric machines work on smoke... when the smoke escapes... they don't work anymore
- mcallegari
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I think version 4.14.0 converted Script functions to a new syntax but that was a deploy error of that version.
For those having this issue, please post your script code and we'll convert it back to the v4 syntax. (new syntax is for v5 only)
For those having this issue, please post your script code and we'll convert it back to the v4 syntax. (new syntax is for v5 only)
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- Real Name: Lawrence Relkoff
Hi Massimo!
Same here. Experiencing an immediate QLC+ crash when trying to open my attached v4.13.1 showfile with the new v4.14.1 running on Win 10 or 11 desktops. I have reverted back to v4.13.1 again because I have a deadline to meet for an upcoming show. But I hope this file helps you with the debug process.
Learning about QLC+ has literally consumed all my spare time since Nov 2024 and I love it! QLC+ is highly addictive and for me it's a wonderful way to spend the day !!
Thank you so much for this AMAZING dmx program! ~ LR
Same here. Experiencing an immediate QLC+ crash when trying to open my attached v4.13.1 showfile with the new v4.14.1 running on Win 10 or 11 desktops. I have reverted back to v4.13.1 again because I have a deadline to meet for an upcoming show. But I hope this file helps you with the debug process.
Learning about QLC+ has literally consumed all my spare time since Nov 2024 and I love it! QLC+ is highly addictive and for me it's a wonderful way to spend the day !!

Thank you so much for this AMAZING dmx program! ~ LR

- Attachments
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FlexDesk betav9.6.qxw
- (1.14 MiB) Downloaded 25 times
Last edited by lrelkoff on Thu Mar 13, 2025 4:58 am, edited 1 time in total.
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hi
this is my Project saved by version 4.13.1
this is my Project saved by version 4.13.1
- Attachments
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base 114.qxw
- (1.62 MiB) Downloaded 28 times
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- Joined: Fri Mar 07, 2025 7:13 pm
- Real Name: Geoff Protheroe
As above. Uninstalled 4.14.0 which had the problems reported fixed in 4.14.1. After installing 4.14.1 it crashed each time first loaded but seemed to work when reloaded. Then when trying to load QXW files they loaded but would not run and then crashed. Tried reinstalling but failed again. Given up and gone back to 4.14.0 which works fine.
- mcallegari
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Hi, I have re-released QLC+ on Windows and macOS (Apple Silicon)
Checked with your projects and it loads OK now.
Please download the updated version which is called 4.14.1-1.
Thanks for your patience
Checked with your projects and it loads OK now.
Please download the updated version which is called 4.14.1-1.
Thanks for your patience
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Thank you, it works properly now.
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- Real Name: Lawrence Relkoff
Hi Massimo,
I am sad to report that while v4.14.1-1 does now open and run my posted sample FlexDesk betav9.91 file, a quick and repeatable error test of just randomly clicking across my Bank B buttons (as if performing a manual chase sequence on them) will crash the program after about 10 seconds of input by any mouse clicks, touch screen interface movrments or by joystick button entry. I use all three. This same chase-type manual action does not cause any crash on v4.13.1 (actually that old version is very stable for me). Hope this helps further the debugging!
EDIT: I also just tried installing v4.14.0 and tried running this same file. No complete program crash happens but my scripts jam up/fail and lights flicker, then the wrong lights might come on and the program hangs up at times.
My file runs a lot of scripts and it's like v4.14.0 cannot execute them or is slower to respond to the demands. In addition my RGB Matrix settings did not transfer over properly from v4.13.1 to v4.14.0. (but they did at least load into v4.14.1-1).
So I'll still continue developing my project with the old v4.13.1 Thanks!
I am sad to report that while v4.14.1-1 does now open and run my posted sample FlexDesk betav9.91 file, a quick and repeatable error test of just randomly clicking across my Bank B buttons (as if performing a manual chase sequence on them) will crash the program after about 10 seconds of input by any mouse clicks, touch screen interface movrments or by joystick button entry. I use all three. This same chase-type manual action does not cause any crash on v4.13.1 (actually that old version is very stable for me). Hope this helps further the debugging!
EDIT: I also just tried installing v4.14.0 and tried running this same file. No complete program crash happens but my scripts jam up/fail and lights flicker, then the wrong lights might come on and the program hangs up at times.
My file runs a lot of scripts and it's like v4.14.0 cannot execute them or is slower to respond to the demands. In addition my RGB Matrix settings did not transfer over properly from v4.13.1 to v4.14.0. (but they did at least load into v4.14.1-1).
So I'll still continue developing my project with the old v4.13.1 Thanks!
Last edited by lrelkoff on Fri Mar 14, 2025 12:19 am, edited 2 times in total.
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Attempted to install the latest version 4.14.1-1 but app crashed. Unable to launch.
Faulting application name: qlcplus.exe, version: 0.0.0.0, time stamp: 0x67d33a75
Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000
Exception code: 0xc0000005
Fault offset: 0x0000000000000000
Faulting process id: 0x1b68
Faulting application start time: 0x01db947a308c3a17
Faulting application path: C:\QLC+\qlcplus.exe
Faulting module path: unknown
Report Id: d5db6ee0-ba93-4a43-8dc4-d3db21c3d362
Faulting package full name:
Faulting package-relative application ID:
Faulting application name: qlcplus.exe, version: 0.0.0.0, time stamp: 0x67d33a75
Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000
Exception code: 0xc0000005
Fault offset: 0x0000000000000000
Faulting process id: 0x1b68
Faulting application start time: 0x01db947a308c3a17
Faulting application path: C:\QLC+\qlcplus.exe
Faulting module path: unknown
Report Id: d5db6ee0-ba93-4a43-8dc4-d3db21c3d362
Faulting package full name:
Faulting package-relative application ID:
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- Joined: Tue Mar 11, 2025 3:43 pm
- Real Name: Scott Mahanes
Thanks Massimo! I apologize for not getting you my project file to you sooner. I was just now able to jump back onto the boards today and I saw where you made another install for Windows. I was going to say that the syntax did change on the scripts, but i see where you caught that yourself. I wasn't being careful myself when testing the new 4.14.1 version, so when it loaded my project file it got changed(no good backups) . I was forced into changing the syntax back to what it needed to be. Anyways, I can now say tonight as i tried the new 4.14.1 Windows download that it worked just fine.
- Attachments
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WHBC Lights & Automation.qxw
- (1.12 MiB) Downloaded 18 times
- mcallegari
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I can continue to investigate but from what I saw from your projects, abusing the usage of Scripts is not the right way to use this software.lrelkoff wrote: ↑Thu Mar 13, 2025 11:37 pm Hi Massimo,
I am sad to report that while v4.14.1-1 does now open and run my posted sample FlexDesk betav9.91 file, a quick and repeatable error test of just randomly clicking across my Bank B buttons (as if performing a manual chase sequence on them) will crash the program after about 10 seconds of input by any mouse clicks, touch screen interface movrments or by joystick button entry. I use all three. This same chase-type manual action does not cause any crash on v4.13.1 (actually that old version is very stable for me). Hope this helps further the debugging!
Scripts should be useful when all the other QLC+ Functions cannot cover your needs.
Apparently you use Script to just start/stop Functions and I'm pretty sure you can achieve that with Chasers/Collections/Scenes.
I strongly recommend to review your workflow and reduce the number of Scripts
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- Real Name: Lawrence Relkoff
Good day Massimo!
Thank you for pointing me in a much better direction! Yes I will definitely revamp my workflow to reduce the demands being placed on the program. I admit my ignorance of fully understanding the program's operation certainly got me carried away with the use of scripts. Have a great weekend... I already know what I'll be doing!
Thank you for pointing me in a much better direction! Yes I will definitely revamp my workflow to reduce the demands being placed on the program. I admit my ignorance of fully understanding the program's operation certainly got me carried away with the use of scripts. Have a great weekend... I already know what I'll be doing!

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- Real Name: Lawrence Relkoff
Hi again Massimo,
(This post is only regarding v4.14.1-1)
Ok I altered my workflow to eliminate as many scripts as possible by using Collections instead. This definitely helped improve the program timing and has stopped the program from crashing, so I thank you for that excellent advice.
However , something else happened for which I already figured out workaround after much trial and error. When first launching the program and loading my showfile, the moment I enter Run Mode almost all my lights start to flicker without any scene being selected, no chases triggering at all, the dmx monitor shows no activity with all values =0....and that symptom pointed me to the USBtoDMX converter I use. After playing with the configuration settings on the QLC+ Input/Output tab I managed to get the program to work properly again. It just seems like I need to touch all the settings to refresh them and save the file several times to get it to settle down and work properly. I actually made no changes, just refreshed everything! So I appear to be running now on the new version and will continue to test. Thank you!
(Note to kenact, thanks for testing my file too!)
(This post is only regarding v4.14.1-1)
Ok I altered my workflow to eliminate as many scripts as possible by using Collections instead. This definitely helped improve the program timing and has stopped the program from crashing, so I thank you for that excellent advice.
However , something else happened for which I already figured out workaround after much trial and error. When first launching the program and loading my showfile, the moment I enter Run Mode almost all my lights start to flicker without any scene being selected, no chases triggering at all, the dmx monitor shows no activity with all values =0....and that symptom pointed me to the USBtoDMX converter I use. After playing with the configuration settings on the QLC+ Input/Output tab I managed to get the program to work properly again. It just seems like I need to touch all the settings to refresh them and save the file several times to get it to settle down and work properly. I actually made no changes, just refreshed everything! So I appear to be running now on the new version and will continue to test. Thank you!
(Note to kenact, thanks for testing my file too!)
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- Joined: Thu Nov 02, 2023 7:17 am
- Real Name: Norman Killat
Hello,
My old projects also cause 4.14.1-2 to crash immediately. I'm not using any scripts.
My old projects also cause 4.14.1-2 to crash immediately. I'm not using any scripts.
- Attachments
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Project Two.qxw
- (1.06 MiB) Downloaded 8 times
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Project One.qxw
- (1.04 MiB) Downloaded 6 times
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- Posts: 27
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- Real Name: Norman Killat
Okay, I just figured out what the problem is. I work with a lot of matrices. I deleted some for testing. After deleting the matrices, the old projects can be opened with 4.14.1-2.
But that's completely unacceptable for my workflow. I'll continue working with an older QLC+ version.
But that's completely unacceptable for my workflow. I'll continue working with an older QLC+ version.
- mcallegari
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I can correctly open Project One and Project Two with version 4.14.1-2 on Windows. No crash.