[Folders not going in my inventory]

Hi, I seem to be having a problem with folders,  when receive things from people in a folder I click accept but they dont go into my inventory its like I never got them, I have tried relogging and even switching viewers from Firestorm to SL viewer  but nothing I have.  everything seem to just vanish and I cant find them anywhere, hope you will be able to advise me. thank you in advance