Client Server Windows 7 x64

Hi all,
I installed JFritz on Windwos 7 x64 as a server, and want to clients to connect to this server.
Installed the JFritz software on both PC's (1 also Win7 x64, other XP SP3) and first its working fine, the client is connecting to the server.
But when I close the client and start it up again, I get an AutoUpdate error; Invocation error.
There is nothing left to do but close and kill the process to get around it.
I treid to throw away the Users\%user%\.Jfritz folder and the ..\%user\AppData\JFritz folder.
This results in doing all the settings again, but htis is no real solution of course.
Hope anyone has a working solution
Bitte! Jemand hat ein tip??

Also the telephone book seems to import the telephone numbers that called.
Why is that??
Don't like it, I want to be in control of the phonebook!
Anyone knows why this is happening?
Or is it the language I'm writing in the problem? Hope not..

Meines Deutsch ist nicht gut genug for alles im Deutsch zu schrieben.
Ich hoffe jemand kann mich antworten
Danke!

Hi Robert,
Oke, thanks for clearing this.
Are there any other call monitors with similair functions?
I really would like a client/server phonebook..

Thanks again.
Cheers, Hans