Hi, did anybody ever encounter problems when packing the database? I think I noticed the following: I had a ZClass, changed its implementation quite often, renamed it to blahBackup, recreated a ZClass with the old name and copied / pasted functionality from backup to the new ZClass. This one now works. But: After packing the database, there was a property in my ZClass which wasn't there anymore before packing - this property existed in one of the prior versions of the class. Fortunately, I was able to fix it very quickly, but could it have mixed up more than just that method? This would be perfidious... P.S.: I never played with the Class ID (that long code in Basic tab), so that shouldn't be the problem. Is this a bug or what? Unfortunately, I'm unable to reproduce the error. Should I put that into the collector? -- Lars Heber, mailto:Lars.Heber@t-systems.com T-Systems, debis Systemhaus GEI GmbH, Geschaeftsstelle Sachsen