Recover file after 'ProjectFailed to read "myFileName".'

[ct8356 1]

I tried to open a .IPP file this morning, and the response was: ProjectFailed to read "myFileName". Does this mean that my file has corrupted? Is there anyway to recover the work that I have done? (Note, a folder called "000Backup_myFileName" was automatically created, but is empty. Will that help at all?) EDIT: In an attempt to solve the problem, I created a new .IPP file, gave it the same name as the matching project folder, and it worked for a week or so. BUT after a week, I had the same problem! I could try the same thing, but I fear I may end up with the same problem again... Edited 3 Feb 2015 by ct8356