Corrupt Library message on one user

[javiertoft]

We have a AC26 Solo version installed on a shared Window.  I wonder why this message appears. As the library seems to continue to function.

Is there any advice here? 

[dsfahsdfhn]

I'm getting exactly the same, but it seems to not be an issue. Appears to only happen on Windows from what I can tell. I suspect it may be related to Mac file characters being present, or the windows limitation of 255 characters for a filepath? As it doesn't seem to be an issue on the Macs here in the office.