How do I fix permissions on item

I bought an item (a backpack) that is supposed to be mod, copy, no-trans, and it was until the sim I was in went down just after I modified it. When I got back the item shows the correct permissions in inventory, however when rezed it shows no permissions and will not let me modify it. How do I get this fixed?

Hi Tygarys,

You should contact the person you bought the item from and have them give you another copy. If the problem persists, please file a bug report and also contact our customer support group for assistance.

Take care,
-Pathfinder