I was on the phone for a long time with TT support and they tried many things nothing of which worked and left me with the info I will contacted when they find a solution. TT did not work for me until i realized that Visual Studio 2011 had installed a .net 4.5. Seems TT does not like it. Once removed, i repaired the TT install, which installed 4.0. have you tried installing windows virtual pc. From within windows 7 you can run a virtual XP machine, and you will be able to load copy of TT. The virtual pc can access your hdd, so TT will be able to import your historical tax records.
Best of luck
Ronnie