Fixed issue with uploaded instances. Improved error handling.
Fixed issue with uploaded instances. Improved error handling.

cschuller/yakjs,dasMulli/yak-js,cschuller/yak-js,cschuller/yakjs,cschuller/yakjs,cschuller/yak-js,dasMulli/yak-js,dasMulli/yak-js,cschuller/yak-js