I have two quasi-identical scripts that write features to csv files. Script A runs fine, script B gives an Error 111. The only difference between the two scripts is that script A has slightly shorter feature names to write. But then again, script B sometimes does run fine. Just not most of the time.

I have another script that is 9 times as long, and writes feature names that are just as long if not longer, and this script never crashes.

I find these random errors to be weird and frankly rather trying, particularly given that the error message is completely generic.

Pretty much impossible to help without seeing some code.
The only advice I can give is to use the new _POS function (1.70)
to try and pinpoint which line crashes.
http://zorro-trader.com/manual/en/trouble.htm