blank fit page when selecting old style plugin after reload

[pkienzle]

The following error occurs when loading an old style model after the "Load Plugin Models" operation (either from the menu, or from editing and saving a model):

Traceback (most recent call last):
  File "/Users/pkienzle/Source/sasview-new/src/sas/sasgui/perspectives/fitting/fitpage.py", line 1179, in _on_select_model
    self._on_select_model_helper()
  File "/Users/pkienzle/Source/sasview-new/src/sas/sasgui/perspectives/fitting/basepage.py", line 2045, in _on_select_model_helper
    self.model = form_factor()
  File "/Users/pkienzle/.sasview/plugin_models/polynomial5.py", line 39, in __init__
    Model1DPlugin.__init__(self, name=self.name) ##DO NOT CHANGE THIS LINE!!!
TypeError: expected string or buffer

This gives a blank FitPage.

The workaround is to request a new fit page, which then makes the old page accessible.