Begin by downloading the latest mLoader programming software from here:
www.matrixtsl.com/resources/getresource.php?id=884
Next go to your Flowcode installation directory and create a "mLoaderPIC" directory inside the "Tools" directory.
Flowcode v5: C:\Program Files (x86)\Flowcode\v5\Tools\mLoaderPIC
Flowcode v4: C:\Program Files (x86)\Matrix Multimedia\Flowcode V4\Tools\mLoaderPIC
Next copy the files you downloaded into the mLoaderPIC folder, there should now be about 10 files in the directory.
Next run Flowcode, start a new project and choose a chip.
Click on Build -> Compiler options.
Click on the Programmer Tab.
The top two fields set the programmer location, it is these you want to edit. Leave the bottom two fields as is to allow the configuration functionality to continue to work.
Change the top two fields to look like this.
Flowcode v5
Location: C:\Program Files (x86)\Flowcode\v5\Tools\mLoaderPIC\mLoader.exe
Parameters: -chip %p "%f.hex"
Flowcode v4
Location: C:\Program Files (x86)\Matrix Multimedia\Flowcode V4\Tools\mLoaderPIC\mLoader.exe
Parameters: -chip %p "%f.hex"