Pls look at post #39, V2 crashed when solo mine.
You can try the command line argument -nochat or run the dameon talkcoind (no GUI).
I am running under Windows 7. Solo Mining still crashed when run with -nochat in command line. This time it just stopped working :
talkcoin-qt.exe has stopped working
Windows is checking for a solutions...
Patch has been applied to fix mining crash. Download the new version. It should work now.