New Template Plugin and Error 50

I have made a blog template to be used when making a new site. I selected the theme and post to be carried over on the new template. When I go to create the new site using the template I immediately get an error code 500 after I click "add site". When I try to go to the new blogs website it is in fact there... but its just an original wordpress theme, posts, comments all of it.
Thank you for your help