add some basic error handling to 'weave' script
add some basic error handling to 'weave' script

2opremio/weave,paulbellamy/weave,weaveworks/weave,achanda/weave,BWITS/weave,beni55/weave,paulbellamy/weave,errordeveloper/weave,awanke/weave,inercia/weave,aaam/weave,ycaihua/weave,achanda/weave,19hz/weave,OnePaaS/weave,aaam/weave,2opremio/weave,OnePaaS/weave,squaremo/weave,tomwilkie/weave,n054/weave,cgvarela/weave,OnePaaS/weave,Lawouach/weave,bboreham/weave,Lawouach/weave,bboreham/weave,2opremio/weave,awh/weave,OnePaaS/weave,weaveworks/weave,dpw/weave,paladin74/weave,BWITS/weave,kidaa/weave,ycaihua/weave,cgvarela/weave,n054/weave,narry/weave,errordeveloper/weave,inercia/weave,inercia/weave,n054/weave,cgvarela/weave,rade/weave,n054/weave,inercia/weave,ycaihua/weave,philipz/weave,Lawouach/weave,awanke/weave,errordeveloper/weave,dpw/weave,awh/weave,kidaa/weave,dpw/weave,tomwilkie/weave,aaam/weave,achanda/weave,rade/weave,beni55/weave,bboreham/weave,awanke/weave,squaremo/weave,narry/weave,BWITS/weave,narry/weave,kidaa/weave,BWITS/weave,19hz/weave,philipz/weave,2opremio/weave,tomwilkie/weave,bboreham/weave,weaveworks/weave,n054/weave,19hz/weave,paladin74/weave,squaremo/weave,paladin74/weave,bboreham/weave,narry/weave,tomwilkie/weave,achanda/weave,awh/weave,2opremio/weave,cgvarela/weave,Lawouach/weave,tomwilkie/weave,achanda/weave,squaremo/weave,weaveworks/weave,philipz/weave,aaam/weave,rade/weave,awanke/weave,beni55/weave,awh/weave,errordeveloper/weave,19hz/weave,ycaihua/weave,philipz/weave,inercia/weave,rade/weave,paulbellamy/weave,narry/weave,ycaihua/weave,paladin74/weave,cgvarela/weave,paladin74/weave,rade/weave,squaremo/weave,kidaa/weave,beni55/weave,beni55/weave,dpw/weave,awh/weave,paulbellamy/weave,kidaa/weave,dpw/weave,aaam/weave,errordeveloper/weave,BWITS/weave,OnePaaS/weave,awanke/weave,philipz/weave