"Not all of the required data has been obtained Bar Magnifier mode will be disabled."
The above message appears for me on a 20t chart with Use Bar Magnifier checked and set to 1t resolution.
The date range for the Instrument is set to 10 Days back, and 30 days of tick data have already been pulled. IOW, the data is present in the system.
Could I be missing something? It seems to me that this is a bug.