receive an error "could not find include file" when running my simulink file

I am trying to run my simulink file, but i received the following error:

"Making simulation target "MPLS1_sfun", ...

C:\Users\name\Documents\MATLAB\slprj\_sfprj\MPLS1\_self\sfun\src>"c:\program files (x86)\matlab\r2009a\sys\lcc\bin\lccmake" -f MPLS1_sfun.lmk lcc preprocessor error: MPLS1_sfun.c:62 Could not find include file "c59_MPLS1.h" 1 errors, 0 warnings "c:\program files (x86)\matlab\r2009a\sys\lcc\bin\lcc.exe" -c -Zp8 -DMATLAB_MEX_FILE -noregistrylookup -I"c:\program files (x86)\matlab\r2009a\sys\lcc\include" -I"c:\program files (x86)\matlab\r2009a\extern\include" -I"c:\program files (x86)\matlab\r2009a\simulink\include" -I"c:\program files (x86)\matlab\r2009a\stateflow\c\mex\include" -I"c:\program files (x86)\matlab\r2009a\stateflow\c\debugger\include" "MPLS1_sfun.c" c:\program files (x86)\matlab\r2009a\sys\lcc\bin\lccmake: Error code 1"

How to solve this problem and what is actually the meaning of this eeror

[TAB]

Are you using stateflow chart in the model ?

[yana osman]

No. In 1 flow, i have from file, subsystem, embedded matlab function and to workspace block. This flow are repeated 50 times as it means 50 minutes

[Kaustubha Govind]

Could you try deleting the folder C:\Users\name\Documents\MATLAB\slprj and try again?

[yana osman]

still got the same error and slprj file created again