After upgrade the server package to 7.3 I wanted to upgrade the Manage Staged Service Package from 1.6.6 to 2.3.2. After uploading I get the message:
I also tried to upgrade first from 1.6.6 to 1.7.6 but the same error.
After service package upgrade the portal rebooted.
Wat can be wrong?
Solved! Go to Solution.