cfpupdat.exe - Application Error

In CFP 3.0.21.239, I did a check for updates and received a reply that there were no updates available. I hit [Finish] and got two consecutive error messages, both the same thing. In event viewer, the log entries say:

Source is Application Popup: cfpupdat.exe - Application Error: The instruction at 0x00fb9dc8 referenced memory at location at 0x00000000. The memory could not be “read”.

Windows XP SP2
Firefox 2.0.0.14
AVG 7.5.524
SpyBot S&D 1.5.2
SuperAntispyware 4.0.1154
Windows Defender 1.1.1593.0
SpywareBlaster 4.0