OAS 4.0.8.1 & JWEB cartridge - ows 10911

I am running OAS 4.0.8.1 on NT sp5. When I startup my jweb cartridge I get ows-04793 and ows-10911. I can run helloworld correctly but when I run my application I get the same errors above again. Is anyone running OAS 4.0.8.1 on NT with a jweb cartridge and not getting these errors. Even if I use the default cartridge from Oracle without altering anything I get these errors. ???

I increased the severity level for logging to 15 for the Cartridge configuration
in the OASManager.
It says init method did not return. For my init method I have that following :
public void init(ServletConfig config) throws ServletException
super.init(config) ;
All the above was generated by the Servlet Wizard.
Below if the level 15 trace information :
OWS-10911: Throwing exception for reason: wrkwExecute: Exec callback returned WRB_ERROR `
OWS-10833: Cartridge HelloServlet/HelloCart init runtime callback did not return WRB_DONE `
OWS-10911: Throwing exception for reason: wrkwfInit:Error in wrkwfInit `
OWS-10911: Throwing exception for reason: wrkwfStartOrig:Error at creation time `
OWS-10911: Throwing exception for reason: wrkwfStart: Cartridge Instance factory creation failed. `
OWS-10803: Cartridge instance factory for HelloServlet/HelloCart not intialized `
OWS-10911: Throwing exception for reason: No Carrtridge Instance Factories Initialized Properly `
OWS-10821: Application HelloServlet failed to deregister with the name server `
OWS-10850: Cartridge Server HelloServlet received exception IDL:oracle/OAS/Cartridge/InitFailed:1.0 while deregistering
Can anyone advise why and what needs to be
done to fix this ??
Please help.
Thanks,

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