Recently I bought myself the Rolls Royce and Freighter expension.

Being someone that flies planes with a model as close to that of the real world, I tried to download the freighter livery of DHL with reg G-BMRH from the ACE installer and chanced the engine variation from the RB535E4B to the RB535C.(as this plane uses the C variant and not the E4B variant)

Doing that gave me the following error:

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Something went wrong...
Press Ctrl+C to copy this message and report error:
value: ac_all_ui_type
mid: 804
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OK   
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How can this be solved?