There's obviously been some miscommunication (and I accept some responsibility for that) - this is not a new problem; its the same problem that I initially contacted support about. I guess it is just framed slightly differently: in terms of an incorrect indicator calculation rather than a problem with the MT4 bridge (which I assumed to be the root cause).

In any event, I haven't been able to reproduce the error from post #458662. I ran my script on 10 assets up until the Friday close and it never occurred once.

If it happens again, I'll be sure to post the log.