如何在OC4J中修复资源未找到错误？

I am trying to deploy a web app on OC4J, and although I've followed the instructions to the letter and the deployment process goes without a hitch, I keep getting a 500 error (below). I am a newbie in OC4J, so I would appreciate some hints on what to look at and tinker with (XML/settings/etc) to fix this. Here's the actual error, just in case:I am trying to deploy a web app on OC4J, and al