EOF Tomcat 3 to Tomcat 4 migration problems

Hi,

We have an EOF-application that runs fine with Tomcat 3.3.1a, but 
doesn't run with Tomcat 4.1.27. The application itself is built with 
WebObjects 5.1.4, but uses only the EOF-part of it. The problem 
manifests itself when the servlet engine has to read the EOModels 
involved, which are accessible as 'eomodeld'-directories. Using Tomcat 
4, the servlet engine seems to ignore the .plist and .fspec files in 
these directories; it looks like it only reads the 
'index.eomodeld'-file. Tomcat 3 on the other hand reads all models 
fine. What could be the difference between Tomcat 3 and 4 that Tomcat 4 
cannot load EOModels anymore?

Alex