One of our customers are migrating from XP ti Win 7 (32 bit mode).
CIPC on XP works fine without issues.
On XP they get "Communicator Exception Error - Cisco IP Communicator failed to initialise and will now exit"
We have tried 7.0.3(3), 7.0.4 and the latest 7.0.5.
CUCM version is 7.1(3).
The LAn switches are HP Procurve.
I can not find this anywhere in the release notes and from what I understand CIPC would work on Win 7 in 32 bit mode.
try to run the CIPC in Windows Vista SP2 Compatibility mode , worked for me once .