I'm trying to create a photoscenery and have added a map from disk to SbuilderX. The image is a geotiff which aligns itself correctly automatically. I select all and try to compile a bgl, but all options are greyed out and the program tells me that "there is nothing to compile because no items have been selected". I see a lot of people have the same problem, but so far I haven't found a working solution to this. I'm using SBuilderX v3.15 and Prepar3d v4.4. Any ideas how can I get the program to compile?