CCS/TM4C1294NCPDT: Loading bin file bricks the MCU

Tool/software: Code Composer Studio

I am developing an application using CCS and TIRTOS.  I have been using the EK-TM4C1294XL launchpad for development.

I have tested the code on the Launchpad and it runs perfectly.

I laid out a PCB for the final product using the same circuitry as in the Launchpad and connected to it using LM Flash Programmer Build 1613.

I was able to read the User registers and was also able to set the MCUs MAC address successfully.

I then set the Configuration to Interface: ICDI; Port: JTAG; Speed:50000; Clock Source: Single Ended 6000000

In the Program Tab I pick the .bin file created by CCS and click 'Program'

The status bar on the bottom shows device being erased and then the code being flashed.  At 100% it then verifies successfully.

It then gives the error message 'Cannot reset target device. and if I tried to read the MAC address it gives me an error "**ERROR**"  Unable to initialize target -0!"

If I follow the exact same procedure with the LaunchPad it loads and runs fine.

I was able to get the MCU back to factory default by doing a Debug Port Unlock.

What would cause this problem?

Thank you,

Sam Virgillo