Hi @Anonymous and @Anonymous
Sorry to hear that you are facing issues with the application.
Please see HERE for a related article
@Anonymous Can you please share your journal file, this will help us troubleshoot further.
Can you confirm if you have installed the latest updates for your Revit version? See HERE and HERE for more information on how to update Revit 2015 to the latest version.
To install updates, open the Autodesk desktop app and click My Updates. To install a new version of your Autodesk software, open the Autodesk desktop app, sign in, and click My Products. To use a web browser to install updates or a new version, sign in to Autodesk Account.
Let me know if you were able to resolve the issue.
Please mark this response as "Accept as Solution" if it answers your question to help other members seeking similar solutions. Kudos gladly accepted.
Regards,