Some basics gauges or effects are missing. What should I do ?
When a lot of modifications have been made into the « Gauge » folder, it is frequent that a part of the base files are missing. In that case, if an add-on needs theses files, it won’t be able to display the gauges into the panel. Often solution consists in reinstalling FSX. In order to avoid reinstalling FSX, you can download Gauge Recover, which is a little program created by Rikoooo that will restore every original file from « Gauges » and « Effects » folders.
Update 13/02/2014 : A Prepar3d version is being created.