Node-inspector in node.js: I can't see my source file in the scripts list, but I can see them in the call stack

I can't see my source file in the scripts list, but I can see them in the call stack.

I have made a breakpoint in my source-file but sometimes it just doesn't want to show my source files in the node inspector.. but only sometimes :s that's the problem

anyone knows how to make this work well? thanks a lot