Modify error reading of CombinedFeatureSource so it actually runs on a separate thread (wasn't before)
Modify error reading of CombinedFeatureSource so it actually runs on a separate thread (wasn't before)

godotgildor/igv,itenente/igv,igvteam/igv,igvteam/igv,amwenger/igv,igvteam/igv,itenente/igv,amwenger/igv,itenente/igv,godotgildor/igv,amwenger/igv,godotgildor/igv,itenente/igv,amwenger/igv,igvteam/igv,itenente/igv,godotgildor/igv,amwenger/igv,igvteam/igv,godotgildor/igv