Does MPLAB see the programmer? And if it does can it be enabled?

If the above is true, try creating a project in MPLAB using the assembly code generated by MCS as the source. Then try to program from there.

If all the above works, MPLAB should pop up a notification each time the code has been changed asking if you want to accept the changes, YES. Then click the program button.

When you get tired of all that, set up MPLAB to use PBP as the language and save yourself a few steps.