RoboHelp HTML 9 frequently crashes

Hi,

I'm using the latest version of RoboHelp 9. While doing the most rudimentary tasks in my project, like formatting text using the Design window and editing HTML code, RoboHelp will either hang or crash unexpectedly. This is happening at least five times a day recently. Many of the pages incidentally contain Word HTML tags and other junk code from Word that I remove manually--don't know if that has to do with the crashing. I can't figure out what's going on.

My computer's specs are the following:

Pentium Dual-Core CPU 2.5 GHz

4GB installed memory

Windows 7 Ultimate 64-bit OS

Any feedback would be much appreciated.

Thanks,

Chris