I have novell 6.5sp6 and Zfd 7sp1.

I have upgraded the windows XP prof SP2 to SP3.
Now I have tried to uninstall the novell client and re-install novell client 4.91 sp4 but during the installation appears this error:

windows installer.... click ok to try or enter an alternate path to a folder containing the installation package "NMAS client.msi" in the box below.....

And at the end I have this message:
there was an error installation novell modular autherication services NMAS error code 1612.

Does someone have the same problem?
Please what do you suggest me to do?