Can’t compile CORTEX_M4F_MSP432_LaunchPad_IAR_CCS_Kei with CCS

(Sorry for double post but I can’t edit titles and needed to add one) I’m trying to build FreeRTOS demo on TI MSP432. I’m starting completely from scratch. I downloaded and installed CCS then the large FreeROTS file Back in CCS I import the project in CORTEXM4FMSP432LaunchPadIARCCSKeil then click DEBUG. The folilow messge appears: “Buildfile generation error occurred.. This project was created using a version of compiler that is not currently installed: 5.2.1 [MSP432]. Please go to CCS App Center to install the compiler of this version, or migrate the project to one of the available compiler versions by adjusting project properties. Build stopped..” I go to App Center and I only see gcc. Nothing like 5.2.1 I tried switching the properties to the latest gcc but that just creates dozens or hundreds of compiler error messges. So it appears I MUST use the TI compiler? Where and how do I get this

Can’t compile CORTEX_M4F_MSP432_LaunchPad_IAR_CCS_Kei with CCS

The MSP432 CCS project is using the TI compiler, but the MSP432 is a Cortex-M4, and FreeRTOS has ports for 6 compilers for Cortex-M4.
So it appears I MUST use the TI compiler? Where and how do I get this
Sorry – but this is not the correct forum to ask that question.