Message: The operation can't be completed because an unexped error occurred (error code-50).
This appears when I'm copying a file to the drive and then I wasn't able to edit to my drive.
Then this morning I can't open my project file. I get this message: The project appears to be damaged, it cannot be opened.
What should I do!??
I have moved my project onto 2 different external hard-drives now.
After looking around for this error, it seems to be related to OS, we would recommend you to contact Apple support for this.