You probably are right, I don't think it crashes because of the size of the VI either.
Do you know how to tell, if there is a "corrupt" VI, and locate it? Unfortunately I cannot post the VI.
In the meantime I checked if the same VI is compareable with LabVIEW for Windows and the result was it compares just fine. So it kinda is a LabVIEW for Linux issue.
The NI support couldn't help me with this issue either, because I can't send over said VI.