In your screenshots I see that you are trying to put intraday VWAP on a daily chart? It will not work. To get intraday VWAP, use the indicator in an intraday timeframe, such as the 5-minutes one for instance. Try to expand the units displayed to 5000 bars.

Did you try to use PRT 10.3 instead of v11 beta?

It works correctly for me in v11, 5-min or even ticks charts, with 1k units displayed. Indicator is applied to the price.

I don’t know about the error message you get, did you send a technical report to PRT?