[news.eclipse.platform] Problem with eclipse Wtp and Tomcat

[scereze@xxxxxxx (scereze)]

Hi,

I installed a development platform based on Tomcat/mysql/Eclipse.
I have set Tomcat as the default server as explained in the documentation.

Then, I created a Dynamic Web project. I am trying now to run a simple jps 
page on the server. But it failed with the following message.

"The tomcat server configuration at /Servers/Tomcat V5.0 
Server@localhost-config is missing. Check for the server errors"

What does it mean ? How can I solve this problem ?

Thanks for your help.