Lukas, It doesn't appear to be the case if you're running Zope under Windows. Uninstalling Zope-2.5.1 doesn't remove the Zope service, and when you install 2.6.0 the Zope service pointing to $INSTANCE_HOME/bin/lib/win32/pythonservice.exe no longer functions. Is there a workaround for this? (ie, a way to uninstall and reinstall the service). I've seen this happen on 3 zope machines, so it's reproducible. Thanks, -----Original Message----- From: Lukas Zapletal [mailto:lzap@root.cz] Sent: Tuesday, October 22, 2002 5:41 AM To: zope@zope.org Subject: [Zope] Binary Compatibility Dears When I move out data.fs from v2.5.1, install 2.6.0 and move data.fs back will everything ok? When I create application in 2.6.0 and then ditribute this binary to machines with 2.5.1 will everything be ok? PS - please respond also to my address since i`m not in mailing list thank you lzap _______________________________________________ Zope maillist - Zope@zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )