CR1000 compiler will crash if you try to declare units for an undeclared variable.
Public SomeVariable As Float Units SomeTypoVariable = Deg C BeginProg EndProg
What version of compiler are you using?
C:\Campbellsci\Lib\Compilers>cr1comp.exe -d cr1comp.exe VERSION:CR1000.Std.31 DATE:12/15/2016
Thanks for reporting this. It looks like the precompiler somehow lost the catch for that error between versions. The version 30 compiler didn't have the problem. Engineering will work on getting it fixed for the next OS release.