I changed my permalinks to /%category%/%postname%/

Everything works fine EXCEPT:

• In my right sidebar I have an embedded Google calender (it's a text widget with the embed code from Google).

• On my PAGES, the calendar/text widget displays fine.
• On my POSTS pages, there is a 404 error

I can't find anything in the Atuhualpa Options to help me, and I'm no programmer (although I'm willing to go in and tweak, with instructions).

Thanks,
Julie

see if the same problem exists when you switch to the default theme. This will indicate if it is an Atahualpa issue or a WordPress and/or widget issue