I'm pretty sure the answer to my problem is upgrade my computer to one that can handle LR4, but it normally works well enough, so I don't want to do that if I don't have to.
Here's the problem and it occurs sporadically. I open LR4, press cntrl, shift, I and for import, or I hit import and it says the following:
Adobe Photoshop Lightroom 64-bit has stopped working
A problem caused the program to stop working correctly. Windows will close the program and notify you if a solution is available.
Before this started, I cleared the cache... but I've done that before.
I have windows 7 home premium, 6 GB's of ram, and a 64 bit OS. I restarted the computer and it was to no avail... and I can wait for LR to fix itself... but I'd rather just have it start working again.