Ok, here's the issue
Sims 3 will not run with BD 2013 AVP installed. Uninstall it (using uninstall tool), it works with no problem. Reinstall BD it stops working again. Have set exclusions for every pertinent file I can think of, excluded the entire program folder to no avail. Excluded any processes I can think of or see, set files to run as admin, tried files in compatibility modes.
ECS G31T-M mobo
Core2Quad q6600 @ 2.4
4 gb ram
2 x 500 gb Seagate HDD
Nvidia GT640
Windows 8 Pro 64 bit
Problem never occurred in Win 7 64 bit. First time trying on Win 8.