MT4 · Runtime errors
MT4 4055 · Custom indicator error | YI GOLD
ERR_CUSTOM_INDICATOR_ERROR
Official meaning
Custom indicator error
Possible causes · YI GOLD suggestions
Indicator, chart or history data is unavailable or handles, parameters and periods are incompatible.
Troubleshooting · YI GOLD suggestions
Verify symbol, timeframe, indicator handle, BarsCalculated and copied element counts. Wait for data availability rather than filling missing prices with zeros.