More robust error reporting.
More robust error reporting.

tilemill-project/tilemill,fxtentacle/tilemill,Zhao-Qi/tilemill,isaacs/tilemill,florianf/tileoven,tizzybec/tilemill,mbrukman/tilemill,paulovieira/tilemill-clima,tizzybec/tilemill,nyimbi/tilemill,paulovieira/tilemill-clima,mbrukman/tilemill,Zhao-Qi/tilemill,mbrukman/tilemill,fxtentacle/tilemill,Zhao-Qi/tilemill,MappingKat/tilemill,Zhao-Qi/tilemill,tizzybec/tilemill,tilemill-project/tilemill,nyimbi/tilemill,tilemill-project/tilemill,mbrukman/tilemill,paulovieira/tilemill-clima,tizzybec/tilemill,nyimbi/tilemill,paulovieira/tilemill-clima,florianf/tileoven,Teino1978-Corp/Teino1978-Corp-tilemill,MappingKat/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,nyimbi/tilemill,paulovieira/tilemill-clima,isaacs/tilemill,fxtentacle/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,fxtentacle/tilemill,MappingKat/tilemill,MappingKat/tilemill,tizzybec/tilemill,Zhao-Qi/tilemill,nyimbi/tilemill,florianf/tileoven,isaacs/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,fxtentacle/tilemill,mbrukman/tilemill,MappingKat/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill