jim,
When did you last reinstall? If yo uare using the version posted before a few days ago, you are likely to see this crashing problem. I recently posted the 64-bit version which has resolved a lot of these problems.
Please uninstall the previous version, and then install the new
64-bit version I posted a couple days ago. That has solved this problem for a lot of users.
I'm working on updating the blockchain engine to solve this problem, but it's still a couple weeks away (it always is a couple weeks away....). Luckily, the 64-bit version has been able to hold on to quite a few users.
Please let me know if that works (or doesn't).