Are you running the R5 version of Compagnt tool on R6 db's or do you have an R6 version? I can only find the following download on the Support site.
http://www-1.ibm.com/support/docview.wss?rs=203&q=compagnt&uid=swg24004199&loc=en_US&cs=utf-8&lang=en+en
Thanks