This is probably a simple re-configuration change, easy points for someone .. ;) .
Referring to an application that is working fine through ant, eclipse and in jboss and/or tomcat runtime:
All of the input and forward targets have pathnames like '/jsp/blah.jsp'.
These are universally receiving "cannot resolve symbol definition".
Now that sounds like a mismatch between the context base and my file system / project directory structure.
However, looking at the Web Module settings, they seem correct:
File | Project Settings | Modules | web Module | Web Resource Directories
Web Resource directory: c:\k\AppRoot (That is CORRECT: that is indeed the file system root directory for my webapp!)
Path Relative to Deployment root / (That also seems correct based on the documentation)
Here is an example target for reference.