more generic, useful for debugging error message
more generic, useful for debugging error message

The previous error message was written for followers macro
however is now being used for the tsScan macro. It usually shows when
a bad url has been given. Returning the error code will give a hint
at what is going on when reported in the group
for example: http://groups.google.com/group/tiddlyweb/browse_thread/thread/2e1a2f27b812980e

TiddlySpace/tiddlyspace,FND/tiddlyspace,TiddlySpace/tiddlyspace,FND/tiddlyspace,FND/tiddlyspace,TiddlySpace/tiddlyspace