1. Start version 7 with an empty workspace
2. Connect to Interactive Brokers
3. Create new chart. Add "YM 12-09", then add "^TICK" (both 5 minute interval). YM is in panel 1, ^TICK is in panel2.
4. After chart is displayed add the indicator kpTickLines to the ^TICK data series. (indicator script is attached)
5. Change the chart interval from 5 minute to 1 minute.
6. Keep alternating the interval between 5 minute and 1 minute. Usually within the first five interval changes an error will be thrown. Sometimes it says kpTickLines cannot be serialized. Sometimes it just fails. (see attached trace file).
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