You mentioned that the original issue you were experiencing was the issue with the template and not being able to edit it because of the error you were getting. Is this still the case? If so have you tried the suggestion about detaching the page from the template first? Please post back and let us know some more about what you are currently experiencing with this, also if you could include some screen shots that might be helpful as well. As far as compatibility the environment you described is the same as ones we are testing on so this should not be the issue.