Subject Connection problems after uninstalling 2.1 client library
Author sllimr7139

I installed FB2.1 on my machine and played with it for a while.
I then un-installed it and re-installed FB1.5.5 (server and client) and
now I can not connect to any FB1.5x server.

I get the following error:

ICS ERROR CODE: 335566721

Unable to complete network request to host "".
Failed to establish a connection.
No connection could be made because the target machine actively
refused it.

Now the strange thing is, if I un-install FB1.5.5 and re-install FB2.1
I can connect to the same machine with no problems.

I'm using the TCP configuration, no software firewall and I'm on Vista.

What am I missing?

Any help would be appreciated.