The MaxQ spaceflight toolkit requires requires Unreal Engine 5. The source code currently builds against Unreal Engine “5.0 EA” which is the UE5 early access build. If you don’t already have access to UE5EA, you’ll need to request access from Epic.
Unreal Engine 5.0 EA
https://www.unrealengine.com/en-US/unreal-engine-5
MaxQ’s SPICE integration requires UE 5 because UE5 added support for double types to the Unreal reflection system. The reflection system allows editing Blueprints, data members, etc. Without this support you wouldn’t be able to use the editor to edit any double values, and MaxQ makes extensive use of double types.
Epic does not yet allow Unreal Engine 5.0 plugins in the UE Marketplace, hence the toolkit being distributed in source code form.
