NullPointer Exception in AdaptiveClassLoader

[Andrej Rosenheinrich <to...@die-titanen.de>]

Hello,

I tried to add a new context (by using the admin page coming with tomcat 
and checking the results in server.xml by hand), wrote a servlet, put it 
in web-inf/classes (compiled of course ;-)), did the mapping in web.xml 
and wanted to test it. The result was a NullPointer Exception at 
AdaptiveClassLoader.loadClass
Looks to me like tomcat cant find the context. Searching the maillist, 
this aint the first question to such an error. Still, the cause for this 
error isnt clear to me or what the solution is. Any ideas?

Thanks
Andrej