What I would recommend though is to try it when you're not using other apps on your computer. Unfortunately GeoConvert is buggy and seems to have several problems with restarting or hanging when other apps are being used.
If that's not the issue, you can always disable GeoConvert Wrapper in the AeroScenery settings.
The only thing running is AeroScenery. I disabled GeoConvert Wrapper and do fewer grid tiles at the same time. It works for what I have left to do.