"source not found" at debug time when creating new class

[rafamd11]

Hello all you outhere.

I'm new to the forum and to java. It's late here, my eyes need a rest and don't know how to solve this problem so I'll be very grateful for your help.

I'v been developing this java+jsp app in myEclipse and no problems till I tryed to debug over a "new" instruction (to a custom class) in the jsp (or the "java").

I've discovered that if I set a breakpoint inside the constructor, it doesnt fail, but if I set the breakpoint in the new instruction, jasper-I-dont-know-what or webappclassloader says it can't find the source.

I have managed to debug anyway, as you may see, but I want perfection

what should I do ? thanks so much!