I`ve lost 4 days of my premium and all because i CANT INSTALL THE CLIENT!!

...I left 2 topics yesterday and nothing no replies, comon!!! i know some 1 can help me =(.
The error i still get is when i try to run the client by double clicking it and it says "Please wait" and after a few minutes a message pops up wich says "Temp Folder Error". ( I`ve downloaded many times new and fresh clients, i`ve run the clients with and without silkroad installed on my comp, i`ve erased all Regs of Silkroad NOTHING NOTHING WORKS!! ).