You can replicate the issue likely by loading the indicator, and switching back and fourth through the timeframes. I.e., if you load it on a M15 chart, and switch to a M30, it will fail, producing this error:
2019.03.14 08:44:58.666 FF_HelpWithScript EURUSD,H1: array out of range in 'FF_HelpWithScript.mq4' (42,18)
Can you help me fix this basic template, or show me what I am doing wrong? I'm sure it's something obvious I just don't understand yet?
The only un-fully formed bar is zero.
I got it.
Removing bars from the lookback period fixes my problem.
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