Just an FYI. I've seen this quite a few times, over the last few versions. Currently on latest NT8 build. Happens to me about every other day. I have a 1 second line chart (NQ) chart with the marketdepth indicator on it. It stops responding. All the market depth lines disappear.
This is in the log
2018-09-19 18:54:03:090 ERROR: Indicator '': Error on calling 'OnRender' method on bar 20126: Collection was modified; enumeration operation may not execute.
An f5 to reload the chart, and it works again. Always the exact same error (though different bar perhaps)
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