I used the new twr-k20d72m-oobe you attached, but that did not help.
I still get many of the following compile errors:
Error[Pe147]: declaration is incompatible with "__nounwind __interwork __softfp unsigned long __get_PSP(void)
These errors are all related to the intrinsics.h file.
I have tried building with Use CMSIS checked and not checked in the Library Configuration, either way I still get these errors.
I am using an IAR EW6.30 development system.
Thanks,
Bob