Folder greyed out, cannot access

Hi, I need some help. I was copying some data to my server and there was a network failure. The half copied folder is now grey in the finder and i cannot open it or see the contents. It has files inside, i can browse them at the command line, i can even move the folder between volumes but i cant un-grey it and i cant drill down into it.

I cannot find an answer to this on google so if someone can tell me how to fix it please that would be great.

naryn