Images unlinked, sandbox error in Publisher

[Girlvsworld]

The last time I worked on this file, everything was fine. Opened it up again to make a revision, and all my images have a ‘sandbox error’ and I have to relink all files. Why did this happen? The linked images are in the same place, in a folder in the Files app. 

[stokerg]

Hi @Girlvsworld,

Was there any more to the error message than just 'sandbox error'?  I don't suppose you happen to have a screenshot of the error, as that should give us a bit more information on the error you had.

[Girlvsworld]

Just this. Screen shot after relinking two files. Had to relink all one by one.

[Girlvsworld]

In the latest beta I’m having this issue again, and it’s exporting my images all pixelated (with no warning) because the links have this sandbox error. It’s completely random. Sometimes closing the app or file resolves it and sometimes it goes away on its own. My files are located in the Files app.