Error message from server: syserr: Invalid argument, file: <

Hi

Anybody able to shed any light on the following error message which appears when trying to transfer files?

I have a feeling it maybe a permission issue.

Error message from server: syserr: Invalid argument, file: <?> (en)

Apols if this has been covered before. If so please tell me to RTFM!

Thanks in advance.

I haven't seen the error yet. Please post a log file.