I'm building up a 2 hour long corporate training session project consisting of files from P2 cards along with a second track of low-data rate MTS files. I get to 1 hour 39 minutes of lining up the P2 files and the next file crashes Vegas. Tried various files. All crash V12.

i7 5930K, 16 GB RAM, Sapphire R9 280x graphics card. Project files on an internal drive separate from my C drive. Anyone else have this issue?