Description of problem:
Cannot create new source folder in C/C++ Managed Make project

Version-Release number of selected component (if applicable):
eclipse-cdt-3.1.1-1.fc6

How reproducible:
Always

Steps to Reproduce:
1. New->Project->C->Managed Make
2. New->C->Source Folder
  
Actual results:
Error (log snippet attached)

Expected results:
New source folder and no error

Additional info:
The folder is actually created.

This is obviously a Classpath bug and I know that Jeff has seen it before but I
wanted to get it filed.  Jeff, I'm sure you'll track it down and eventually
change the component to gcc and assign it to Tom Tromey.