deploying client remotely fails in sepm

Hello,

After some research in this forum I still don't seem to succeed in installing a package to a W7 64 bit client.

SEPM is installed on W2003server 32 bit, version 12.1.671.4971. Client is W7 enterprise, UAC is disabled, simple file sharing is checked out, administrator rights has been checked.

It fails in the screen were it must install the package. Browsing the network, finding the computer it all goes well. Pinging between the machines is ok.

What is going wrong at this step?

I uninstalled on the W7pc an unmanaged client. Now i'm trying to get it managed via remote push.

Also tried the SYMHELPtool. Need a version update but will that fix this problem?