I tried an anchored walk forward test by setting the NumWFOCycles parameter to a negative number. The training run failed before starting with no error message. This is all that is printed to the message window:

Code:
MOD_Workshop4_2 compiling.................

MOD_Workshop4_2 compiling..................



This worked as expected:
Code:
NumWFOCycles = 5



But this failed without starting:
Code:
NumWOFCycles = -5



The same behavior was observed in two different scripts. Zorro S version 1.40.2. Am I missing something obvious, or is this a potential bug?