JCapone

I have recently in the past 4 days been getting this error message saying "error while requesting mesh upload permissions" after i open the file i choose to upload. i have looked at other related posts and nobody has got any help. yes i cleared my cache. i use zbrush. i have had no problems untill now. my computer is way above the compatability needed for sl. does anybody know how to resolve this or the reasons for this in detail?