10.1 Debugger not showing structure or value of variables

Hi,
I have a program that was written in the 7.0 debugger, however when I open that program in the 10.1 debugger, I can't view the structure of the program. I tried creating a new project and importing the files but the result was the same. The other error is that the program refuses to show the values of variables while debugging (with breakpoints). I can't really write everything from scratch again as a) the program is not mine, I have to edit it. (b) it is a very huge program and writing it again as well as designing the forums will set me quite a bit. Is this a bug or is the debugger just not compatible with the older versions? (Which is very infuriating) if this is the case, can someone please link me to the 7.0 debugger as I can't find it anymore.