Sadly, that solution didn't work

same issues, tried saves going back from level 8 through 20 now. Still same CTD in every save.
I've also tried fiddling with the graphics settings with no change.
compy specs are
Sapphire ATI Radeon 4850 1gb vram
4GB DDR2-800 ram
AMD Phenom II X4 965 3.40ghz Processor
Windows 7 Professional 64 Bit OS
drivers are all up to date as is Windows.
Verified integrity of steam files and steam, haven't tried uninstalling reinstalling it yet.