Hi
After the installation is done, the Deployment Agent (CPUSE) verifies some things and if any test fails it issues the message you describe.
Unless you configured anything special, it verifies that the main processes that were up before the upgrade are up after.
Sometimes it might take too long for a process to start so the mechanism times out.
You do not need to be concerned but please verify on the machine that the processes are not terminated (i.e. T state) using "cpwd_admin list" and that install policy to this machine finishes successfully.
I'm almost sure the reboot recovered a failed process if there was such but just to be on the safe side - please check the above
Boaz