Hacking Rock Band 3 Error

[Grosi]

I have a problem with rock band 3. If I try to play a downloaded song i get many times the error that says that the dlc is out of date and cannot be restored to wii system memory. Then it deletes itself and i have to redownload it again. Same thing happens then. I dnt know what to do. I have a PAL wii and a PAL game. I dont use usb loader or neogamma or something like that. Ive tried 2 sdhc cards already. 1 32gb sdhc kingston and 1 other 32gb sdhc card. My wii system is 4.2E. I have patched IOS56 so i could download the songs. Does anyone know how to solve this problem?