CCS/MSP-EXP432P401R: Can't find a source file at ".... " error

Part Number:MSP-EXP432P401R

Tool/software: Code Composer Studio

I have a modular mathematical model that I can easily expand and contract. I have no problem flashing the code with up to 6 of my module, but, when I try to store more that that, I get a run time error: it says:

Can't find a source file at "C:\space\msp432-driverlib\build\MSP432P4xx/flash.c"
Locate the file or edit the source lookup path to include its location.

With the maximum size of code, I use 59% of flash and 49% of SRAM.

Any help in pointing me in the right direction is much appreciated.

Thanks,

-Edgar