[SOLVED] can’t find the library ‘lib/boot.aem4’ specified by package ti.targets.arm.rtsarm. It wasn’t found along the path

You might get this error after changing the compiler version in the Project tab of the CCS General properties window.

Issue is that the target field has changed, its very subtle bug in CCS as only the last letter might be missing:

Solution

Go to Project Properties > CCS General > Tab Products > Target.

Manually set the Target field back to “ti.targets.arm.elf.M4F” or whatever it was before.

Source:
https://e2e.ti.com/support/tools/ccs/f/81/p/753415/2787904#2787904