Blodwyn. I use Vision Jet, C172 and Diamond 62A, Turning the FMC knob to get to FP Catalogue, I press FMC Knob, this will normally import the FP.
Occasionally it sticks on ‘importing’. I close the FP window, go to the PFD and ensure that CDI is set to GPS ‘Magenta’, and usually everything is OK.
On the occasions it hasn’t loaded, I have entered the Approach and select ‘Direct to’ a fix on that
Generally it now works as it is supposed to.
I also use the DA62A mod for FLIGHTSIM.TO