Dear Sirs, i have problem when autograding with the new version 7.1. All my files stopped to autograde. A message appears like that in the attachment. First I thought that my new files are wrong, afterwards i opened old files whitch are had already autograded, but they also do not autograde correctly. I deinstalled the program following the article oubut that, cleared the registry files and all the folders mentioned in the article. The new instalation gives the same result. Please help!