Ok also playing around with PlotMode does not help. Equity is simply not displayed when I click [Result] for BarPeriods below 240, which is really strange.
Anyway, as long as PLOTNOW works I am good.

I see that the equity curve is normally not displayed when it was negative at the end of the simulation. Maybe that was the problem? The workshops all display equity curves regardless of PLOTNOW, unless you've modified the system so that the equity is negative. Anyway we'll change this so that also negative equity curves are displayed.

Yes exactly thats the problem. It only occurs when I decrease the timeframe, which renders the strategy unprofitable.
Thanks for taking care of this, in the interim I know how to work with it.