Hi all I'm still somewhat lost. I copied the Data.fs from Zope 2.4.0 to 2.4.4b1 (Solaris). Zope starts fine but when trying to use a Catalog I get the following message: Traceback (innermost last): File /.../lib/python/ZPublisher/Publish.py, line 223, in publish_module File /...//lib/python/ZPublisher/Publish.py, line 187, in publish File /...//lib/python/Zope/__init__.py, line 226, in zpublisher_exception_hook (Object: Catalog) File /...//lib/python/ZPublisher/Publish.py, line 171, in publish File /...//lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: manage_catalogFoundItems) File /...//lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: manage_catalogFoundItems) File /...//lib/python/Products/ZCatalog/ZCatalog.py, line 404, in manage_catalogFoundItems (Object: Catalog) File /...//lib/python/Products/ZCatalog/ZCatalog.py, line 783, in ZopeFindAndApply (Object: Catalog) File /...//lib/python/Products/ZCatalog/ZCatalog.py, line 771, in ZopeFindAndApply (Object: Catalog) File /...//lib/python/Products/ZCatalog/ZCatalog.py, line 554, in catalog_object (Object: Catalog) File /...//lib/python/Products/ZCatalog/Catalog.py, line 439, in catalogObject File /...//lib/python/Products/PluginIndexes/TextIndex/TextIndex.py, line 363, in index_object (Object: title) File /...//lib/python/ZODB/Connection.py, line 544, in setstate ImportError: (see above) I can't tell what the problem is. Somehow seems to be something with Unpickle. I read through the old lists on the subject but I can't quite figure where my fault lies. Help is very appreciated! ;-) Oliver Erlewein P.S. How can I recompile Splitters??