I have been plagued by a very strange bug tonight. I am trying to create a base class for a zClass, and I had an typo on a line of the code, which caused an import to fail. No matter how hard I tried, I could not get get Zope to notice that the line had changed, despite many restarts, removals of .pyc files, etc. The exception would still get thrown, and the line of source quoted, always had source that no longer exited in the .py file. Finally, I thought that perhaps I should delete the product altogether, and then restart zope. Now the product does not show up at all. Ever. No matter what I do (including undo of the delete). Finally, I moved the source code out of zope's home directory, and blew zope away, and reinstalled from scratch from source. When I move my code back into lib/python/Products, it still fails to appear in teh product list, even as a broken product. I have looked at the source, and it does not look as though it has been modified, and this is an entirely new Data.fs file, so what could possibly be going on. Any ideas, anyone? This is not my first product (zClass or otherwise) and I have never seen this problem bfore. Zope is version 2.1.6 Please help. --sam