Signature Verification Failed Error on a Resource from Documentum

Problem

When I try to open/edit a resource from Documentum, I receive the following error:

signature verification failed: certificate for All-MB.jar.checksum not signed by a certification authority.

Solution

The problem is that the certificates from the Java Runtime Environment 1.6.0_22 or later no longer validate the signatures of the UCF jars.

Edit the eclipse.ini file from the Eclipse directory and add the following parameter to the -vmargs: -Drequire.signed.ucf.jars=false. For example:

-vmargs 
-Xms40m
-Xmx256m
-Drequire.signed.ucf.jars=false