When trying to build a java stored procedure from Stored Procedure Builder (IBM DB2 v7), I get the following error message:

[IBM][CLI Driver][DB2/NT] SQL4304N Java stored procedure or user-defined function ".", specific name "" could not load Java class "COM/ibm/db2/app/sqlejProcs", reason code "4". SQLSTATE=42724.

Have this problem after applying FP12 and running db2updv7 utility on UDB EE 7.2 on Windows
Before that (on UDB v7 with FP3) I was able to compile and run the same java SP without any troubles.

Anybody knows how to fix this problem?