Creative suite 5.5: I couldn't update the majority of my applications... WHY???????? Here is the message I got "There was an error downloading this update. Please quit and try again later. Error Code: U43M1D207"

Hi guys,

Does someone knows how to update Adobe Creative Suite 5.5 Master Collection Student and Teacher Edition, please..?

I bought the software 2 years ago and I have a good Imac... So I don't understand why I can't update the applications...