Unfortunately I deleted the product and then made an equal product (after that it worked) so I cant tell if this was a bug. I'll let someone else who has the same problems try it. Peter Dieter Maurer skrev:

Peter Arvidsson writes:

...

The strange thing is that the product itself is not broken only all the instances become broken everytime I restart... Try the following:

delete the products (okay start with a single one, just to try) from "ControlPanel/Products" (this of cause will be possible).

restart Zope: look at ControlPanel/Products.

Maybe, you now have a broken product with a traceback telling you the problem cause.

By magic, Zope retains products in some cases when there is a problem during import without showing any indication of the problem (someone told in the list, that something is written to a log file, if logging is enabled).

By removing the product manually, I hope Zope will show you the problem.

If my proposal works indeed, then this product retaining behaviour is more a bug than a feature.

Dieter