Matlab Debugger Do not Stop

Having done some Matlab development lately, I observed a strange bug. I had a main script program as follow:

clear all;

close all:

MyFunction();

... do something 

In the code debugging process, I tried to place a break point in MyFunction's code, and although the break point appears to be set in the editor GUI, the program do not stop when running!!!

After some research I figure out that the clear all command interfered with Matlab debugger and prevented the program to stop into a function. So the solution was to delete the clear all function and it the worked correctly.

It is really a shame that a 3000 CHF expensive program cannot manage the debugging process in a better way.

MS visual studio - debug / release options

I am really a big fan of visual studio, but today I helped a friend installing visual studio express edition on his computer and we find out that the release/debug option beside the play button was disabled...strange. So we google the question. Thus we find out that turning back on the release/debug option was quite cumbersome.
The response was find on stackoverflow (http://stackoverflow.com/questions/2812423/how-to-switch-between-debug-release-in-visual-c-2010-express)

And reported here for your convenience:
"

1. Enable Tools -> Settings -> Expert Settings.
2. Go to Tools -> Options. In the dialog box, check the Show All Settings option in the bottom left.
3. In the above dialog, now choose Projects and Solutions -> General. Check the option Show advanced build configurations. Click Okay.

"