It seems something is off with the .NET SDK installation.
If you open a command line (Win + R → cmd) and type dotnet --list-sdks what is the output?
Please also run where dotnet
For reference this is what I get when I run these commands:
C:\>dotnet --list-sdks
8.0.415 [C:\Program Files\dotnet\sdk]
9.0.306 [C:\Program Files\dotnet\sdk]
10.0.101 [C:\Program Files\dotnet\sdk]
C:\>where dotnet
C:\Program Files\dotnet\dotnet.exe
Does it help if you place a file called global.json with the following content into your D:\VVVV\Export\MEXT20251211001 folder?
{
"sdk": {
"version": "8.0.0",
"rollForward": "latestFeature"
}
}