Internal errors on embedded matlab functions in Simulink

Hi Everyone I have a very weird problem. I am using Simulink blocks together with embedded matlab functions to simulate my system. I had been running this program for too many times before. Today It pops out this error

INTERNAL ERROR. Failed assertion in sfdb_breakpoints.c at line 35: (script->bm.breakpoints).length>(unsigned int)(lineNumber-1)

I tried several ways , for example:

http://www.mathworks.ch/support/solutions/en/data/1-161ZV6/index.html?product=ML&solution=1-161ZV6

did not work out Now, all the Embedded Matlab functions have this error. I am using Matlab 2012b version Does anyone have the same problem as I do? thank you for giving any help I am stuck here best Hung

[Kaustubha Govind]

Hung: I would recommend that you report this to MathWorks Technical Support to see if this is a new bug or if there is a solution.