Firstly it has heaps of dependencies that are already installed..
Anyway it downloads them then gives me the following error:
unable to make backup link of `./Library/MobileSubstrate/DynamicLibraries/libhide.plist' before installing new version

I have an iphone 3gs (old bootrom) jailbroken on 4.2.1 with greenpois0n.
Is this server side or client side? (maybe traffic issues?)