what version is the appserver, and what version is the target agent? are you deploying hotfixes in the blpackage?
The appserver is 7.4.5
Agent is 7.4.5
yes I am deploying patches in a blpackage.
The patches are
KB950852-x86 and KB960715-x86
i was thinking it could be due to a version mismatch in the agents. open a support ticket and they might have the reference for that error code you get back.