Was there any process or action that you have done that may have prompted this error? Usually, when a file is corrupted, it is due to the .drs file being removed from the D5 File-Folder or being completely renamed.
We can try to recover it, but we can’t guarantee that it will have the same output as the latest version of this file. You may send this file to support@d5techs.com and have it titled ‘Clov-Forum Unable to Open, Project File Corrupted’
Please let me know if you have already sent it to avoid further delays.