If you encounter the above error message when trying to save a maintenance plan you created using the the wizard in SQL Server 2005 Management Studio (SSMS), the first (obvious) thing you should try, is to check if the latest service pack is installed and if it is not then install it!
You can check out
one of my past posts on how to find out which service pack is currently installed on your SQL Server 2005 instance and on how to get the latest service pack.
However, if you are still experiencing the same problem, even in the case you have installed the latest service pack, then you can try running the sql script called "
sysdbupg.sql" which can be found in the SQL Server installation directory under the subfolder "
install".
This script upgrades the system database stored procedures from the RTM level. Databases which may be upgraded are:
Make sure before trying to execute the above script, to backup the aforementioned system databases!
A big thanks to my good friend Ioannis for bringing this hint to my attention!