I am having trouble saving a storyline file. The file was originally written by someone else in the company and they have saved it to a shared drive. When I open into my storyline 3 it says it needs to upgrade to a later version (I think it may have been written in storyline 2, but I have also opened it in storyline 2 and get the same error message when I try to save the file). I have tried to save, save as, and edit and save/save as. The error message I get is: "the project file could not be saved. CompressLengthMismatch."