I seem to be having a weird problem that just started happening.
If I load V4 it might crash shrotly afterward, or if I reload a previous saved scene (done in P7) it will crash when I load it. Is anyone else having this problem? Is there a solution?

Another question I can't find the answer to:
In the V4 folder there is the option of  V4 to V3...what exactly does that do?