"Busy" in command window, doesn't respond

Have only been using Matlab for a short while but has worked just fine until now. When running a test file to test my programs the command window says shows as "busy" endlessly and stops responding completely indefinitely.

Answer 1

[Star Strider]

This occurs with large data sets, infinite loops, or slowly-converging optimizations.

The first option is to use CRTL+C to interrupt MATLAB. This sometimes will point to the problem, because MATLAB will display an error in the Command Window telling what was interrupted. If you have a counter running or something similar, look at its value in the Workspace window to see what the problem may be.