Cannot open Evolution Email application

[John Wirt]

I have recently updated my RedHat Enterprise workstation to version 
2.4.21-37.0.1.EL but in the process the Evolution Email application no 
longer works.  He Kmail application works but not Evolution Email.

When I try to start Evolution, an error message appears, "Cannot access 
the Ximian Evolution Shell."

After updating RedHat, I got an error in the boot up.that the eth0 
connection could not be started because,

   "...some other host is already using address 192.168.10.50."

The Kmail client would not work either. To get an email client, I used 
the Network Configuration Tool to delete the installed connection and 
create a new one. The installed connection had a fixed IP address at 
192.168.10.50 and it's status was "Inactive." I tried to Activate" it 
but got the message the "some other host is already using address 
192..168.10.50." So, I deleted this connection.

After installing a new connection at 192.168.10.51, I am able to use 
KMail but not Evolution.

I am not sure why the 192.168.10.50 connection is "locked." In fact, it 
no longer exists, at least when viewed with the Network Configuration 
application. I assigned this fixed IP address when I originally 
configured RedHat. My machine came setup by Dell but I configured it. 
The 192.168.10.50 connection worked for months with Evolution Email.

The reason that  Evolution will no longer open is probably that it is 
configured to use a connection that no longer works for some reason.

I would like to clear this "other host that is using 192.168.10.50" but 
do not know what to do to accomplish this. Once cleared, maybe Evolution 
will open and I will be back in business.

I do not understand why this 192.168.10.50 connection has apparently 
gotten locked up. After a considerable effort I have swapped the 
physical drives 0 and 1 to install another operating system which craves 
drive 0 in a dual boot arrangement, and in the process of reconfiguring 
Grub to run from drive 1 I had occasion to send some emails out to my 
other computer. In reconfiguring Grub I  was booted to a copy of Knoppix 
but configured KMail to use 192.168.10.50. This worked. I do not know if 
KMail was running in Knoppix or in the copy of Linux in the /root 
directory on the new drive 1.

Thank you for any assistance you can provide.

Basically, what I want to do is delete the 192,168.10.50 connection that 
has apparently been taken over by some process and recreate it for 
Evolution to use. Maybe I have to uninstall Evolution in order to 
accomplish this. I do not know how to uninstall Evolution.


John Wirt