[Zope] Zope 2.6.0 Importing 2.5 zexp export files

[Ralph vd Houdt]

Hi All,

When I try to import my exported 2.5 Products and ZClasses on a 2.6
installation it give me the error:

  ImportError: No module named iclass

Can anyone give me advice on upgrading to 2.6 without these errors?

Greetings Ralph vd Houdt