Guild Wars 2

I was playing guild wars just earlier today when i suddenly crashed, upon restarting my client and loading the game i received this error message

A file was corrupted in the archive. Please run once with ‘-repair’!
A serious error has occurred that prevented the application from continuing. A report has been sent to ArenaNet to help determine the cause.

I play on a mac and have already tried running
/applications/guild\ wars\ 2.app/contents/MacOS/cider —use-dos-cwd C:Gw2 -- C:\\GW2\\GW2.exe –repair
in terminal which doesn’t work!!! can anybody help me?

You might get a better response if you post this in the Mac Beta Client forum.