It has something to do with Ansys Workbench.
Perhaps http://communities.ptc.com/docs/DOC-3922 can help.
If you don't have Ansys Workbench installed, then remove any mention of it from the Config.pro. The line will start with PROTKDAT. Look for the config.pro file in the C: drive; you can use an advanced search in Windows explorer for files containing the text PROTKDAT.