DBFix problem

DBFix problem

Ever since I did the DBfix for Ver.6 most of my PC cant install the agent anymore. Im getting two different error messages:

"Unable to get the agent status. Operation timed out"
"The RPC server is unavailable"

I have a group policy set to open the following ports on each PCs firewall:

Windows Firewall: Degfine inbound port exceptions
6100
8021

I also have a group policy set to do the following functions:

Windows Firewall: Allow inbound file and printer sharing exception... Enabled
Windows Firewall: Allow inbound remote administration exception... Enabled
Windows Firewall: Allow local port exceptions... Enabled


Please help!
Thanks!