Just Flight BAe 146, CTD after entering particular routes, airac 2111/12

Hi all,
I’ve recently picked up the Just Flight BAe 146, but have been experiencing issues with the UMS Navigation system implemented. I have already contacted Just Flight support who have suggested this may be an issue with the Navigraph Data, so I am posting here to verify if this is the case.

The Crux of the problem is that, when entering certain flight plans (in this case one specific one), upon entering data into other areas of the UMS (fuel etc.) and entering relevant data, then moving to another page (page 2 of Fuel, Perf etc.) this triggers a CTD. A typical eventviewer log is listed below:

Faulting application name: Prepar3D.exe, version:, time stamp: 0x61a546ea
Faulting module name: UNS-FMC.dll, version:, time stamp: 0x5fe74027
Exception code: 0xc0000409
Fault offset: 0x00000000000bb45c
Faulting process ID: 0x3354
Faulting application start time: 0x01d7e905914d093d
Faulting application path: E:\Lockheed Martin\Prepar3D v5\Prepar3D.exe
Faulting module path: C:\Users\Martin\Documents\Prepar3D v5 Add-ons\JustFlight 146 Pro\SimObjects\Airplanes\JF_146-100\panel\UNS-FMC.dll
Report ID: 83312c46-4eba-4860-9bf0-447cca326464
Faulting package full name: 
Faulting package-relative application ID: 

The specific route that seems to be triggering this is the following:
This occured with the previous airac (2111) and the current one (2112)

A quick guide for replicating the CTD if you have the 146 available: Load into LFLL, put the aircraft into the turnaround state. Start the UMS and enter the route I described (it seems to trigger even with different SIDs/ STARs selected), then go into the fuel page and enter load and fuel (doesn’t matter what you enter). Then either go to page 2 or go to the Perf Page, the sim should CTD.

Any help would be very much appreciated.

Kind Regards,

Edit: some additional details for the avoidance of doubt:
OS: Windows 10
Sim: P3D v5.3 (though I also experienced the problem in 5.2)
Nonstandard software: Orbx/ Digital Design LFLL Scenery, FSUIPC, Rex Sky Force (I don’t believe any of these are relevant however)

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