https://groups.google.com/forum/#!search/pythonnet%7Csort:date/kivy-users/X0R7FUtysAk/IBKUJuyGBQAJ

The problem was that importing the clr module does modify the import function and this seems to be globally. 

For standard importing (i.e. import xyz  or from xyz imprt abc) this does not cause a problem, but in kivy/factory.py it calls import in a way that is not supported by the overridden import() from the clr implementation.

As a work around I now have factory.py create a reference to the import as self._local_import and then around line 140 in factory.py I replace

     module = import(name=item['module'], fromlist='.')

with

   module = self._local_import(name=item['module'], fromlist='.')

And it appears that as long as factory.py is used at least once before the clr module is imported then things seem to work out.

This seems like a hack and I would prefer to have something local to the clr importing that reverts import to what it was, but my attempts to do so only fixed the import locally to the module that did the importing and not globally like the import clr is doing.

I guess this is more of a python thing but can anyone think of a way to correct this w/o having to modify kivy/factory.py?