Hi Thomas,
First, you need to make sure that your dynamically launched VIs are included into the EXE, to do that, in the build specs, in 'Source Files' you have to add these VIs in the "Always Included" list.
Then there path for these VIs will not be the same when you run the code and when you run the EXE
- in source the VI path is C:\Users\thomas.granito\Desktop\ProjectName\Test.vi
- in EXE it will be C:\<where-ever-your-EXE-is>\App.exe\Test.vi
So the easiest will probably be to use a relative path to the main VI.