Handle string error messages.
Handle string error messages.

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