MSPST32.dll in the Office12 folder is OK.
Originally Posted by jaustin
%SYSTEM32%\mspst32.dll was left by some software that installed some old version of MAPI.
So after removing %SYSTEM32%\mspst32.dll please recreate logs and repost also crash dumps.
Can you try the most recent version of ZCO?
So I uninstalled ZimbraOlkConnector-5.0.1_GA_1900_5.0.2450.1 and deleted the profile, then installed ZimbraOlkConnector-5.0.11_GA_2695_5.0.2817.11 and everything seems to be working fine. Even the TOPSS software. Makes me feel a bit silly actually, but I'm very glad that I don't need to wipe 'er clean. Thanks for all of your help!