500 error when installing Platform 1.9.9

I am workign with openmrs 1.9.9 and tomcat 6 , and during installation i get the following error after all updates are made to a new database

Error :

HTTP Status 500 -

type Exception report


description The server encountered an internal error () that prevented it from fulfilling this request.


Any suggestions ?

Hmmmm… this may be a long shot, but I see reference to /usr/share/apache-tomcat-6.0.29/temp/ in that trace. Can you try deleting the temp, and re-starting?

That doesnt do it