basemap 0.99.4 on vista no go "0xC0000005: Access Violation"?

I can run a demo basemap on my Vista PC using version 0.99.3 for py2.5. I upgraded to 0.99.4 because the great circle function would crash. But now nothing works.

I brought it in to Microsoft C++ debugger:

“unhandled exception in python.exe: 0xC0000005: Access Violation”

Marc Desmarais

Long Beach, CA, 90814