Newly installed VVVV Gamma, not running on two devices

sophieamarea · March 9, 2025, 3:32pm

Hi guys,
i´m new to the forum and I really hope, someone can help me with this:
I installed VVVV Gamma (newest stable) and I just can´t get it to run. The installation worked perfectly fine but the programm is simply not opening / crashing instantly. Also, there is no error window. I asked Chat GPT for help and tried/ controlled different things:
-opening VVVV as administrator
-looking at my antivirus software (not the problem)
-starting VVVV through “cmd”
-looking for “/log” files
-controlling if .NET 6 is installed (it is)
-i tried without GPU / disabled it
-updated windows / tried with a different user
-tried reinstalling it (still not working)
-tried installing another version (preview 7.0)
-tried installing & running on my computer instead of my think pad (also not working there)

I added screenshots of the windows-protocol, unfortunatly it´s in german but maybe someone can see what seems so be the problem. I´m sure it´s something small & stupid.
Sorry for any mistakes, english is not my first language. I also have no clue what I am doing so please explain everything like you are talking to a first grader :)

I really need some help, I need VVVV for an uni project.

Thank you!!

sunep · March 9, 2025, 5:04pm

which version of windows are you using?

sophieamarea · March 9, 2025, 5:38pm

Hi sunep,
I am using Windows 11 on my PC and Windows 10 on my Laptop. I installed Gamma 6.7 and then tried the 7.0 preview. Both are not working on both devices. I think I must be doing something wrong while installing or there is something missing on my devices but I am not sure what…

Thanks in advance!!

sebescudie · March 9, 2025, 8:19pm

Hey,

Did you try starting vvvv from the command line with the --log argument? If so, could you post the log file you get when vvvv crashes?

More info:

https://thegraybook.vvvv.org/reference/hde/debugging-log.html#log-issues-during-startup-of-vvvv

Let us know if you have any question.

Cheers!

sunep · March 9, 2025, 8:31pm

not sure if it should be necessary, but are you installing on an administrator account?

Elias · March 9, 2025, 11:15pm

You could also try the following:

Open a command line by pressing Win+R, type cmd and hit Enter
Navigate to the vvvv install folder for example cd %ProgramFiles%\vvvv\vvvv_gamma_6.7
Run vvvv via dotnet vvvv.dll

Does the command line print anything useful?

sophieamarea · March 10, 2025, 1:45pm

Hi there,
thanks for all the suggestions!

a) sunep I did install the programm on an administrator account. I also tried a different windows user yesterday but it makes no difference.

@sebescudie cd I also tried that yesterday and I think this might be the problem. The log file said that the .NET SDKs could not be found. I installed the 8.0.201 and 8.0.406 versions a few days ago but VVVV is still not running. The SDKs are listet in the normal “C: Programms” folders but VVVV can´t seem to find them. Is there any way I can manually redirect / set the path to the right one?

@Elias I haven´t tried that so far, thank you for the suggestion. The cmd line said “Unhandled exception. System.IO.FileLoadException: Could not load file or assembly ‘vvvv, Version=2024.6.0.0, Culture=neutral, PublicKeyToken=null’.” That means, that .NET can´t run the vvvv.dll file, right? I can find the .dll file in the installation folder, so this also leads us to the assumption that the .NET SDK is the problem.

Thanks again for your help! If somebody has an idea for the .SDK problem, please let me know :)

Elias · March 10, 2025, 2:26pm

Wait, the instructions I gave you lead to a Could not load file or assembly vvvv? Can you post a screenshot of the command line please? Because this sounds off, in that case it wouldn’t have started and written out a log file in the first place.

Elias · March 10, 2025, 2:28pm

Also please post the result of the following command
dotnet --list-sdks

sophieamarea · March 10, 2025, 2:46pm

Yes, it did, I´ll add the screenshot. I tried searching the .dll over cmd, as seen on the screenshot. It can finde the file (as seen through “1 Datei(en)” ) but can not load it.
Thanks again for your help :)

sophieamarea · March 10, 2025, 2:52pm

@Elias
At the moment I think this could be the issue:
as seen on the screenshot, my pc lists the (x86) dotnet version as the first version, even though I installed the (x64) version a few days ago. I tried to temporarly start vvvv with the (x64) version through cmd through ““C:\Program Files\dotnet\dotnet.exe” exec vvvv.dll” but it´s not working even though vvvv.dll can be found in the right folder (as seen on the screenshot before). I will try to set the right path manually through “sysdm.cpl”.

sophieamarea · March 10, 2025, 3:07pm

@Elias

Also, a screenshot of the SDK list after " dotnet --list-sdks"

list sdks

Elias · March 10, 2025, 3:21pm

Ok, if I manually run the x86 version of dotnet, I get the same error. That explains that part. So yes, either fix your PATH variable, or uninstall those x86 versions of dotnet all together.

In any case, what does "%ProgramFiles%\dotnet\dotnet.exe" "%ProgramFiles%\vvvv\vvvv_gamma_6.7\vvvv.dll" return for you?

sophieamarea · March 10, 2025, 3:54pm

I can´t believe it, after 4 days of trying vvvv is finally running. I uninstalled the x86 dotnet versions but some of theme can´t be uninstalled (also not through powershell and cmd / as administrator). I will try to do it with the Microsoft Install Uninstall Troubleshooter tomorrow but for now, vvvv seems to acknowledge the x64 version.

@Elias , thank you so much for your help, I really appreciate it!!

Elias · March 10, 2025, 4:13pm

Glad to help and thanks for the patience on your end. Knowing what causes such misbehavior is invaluable to us.