SuperDevMode - SourceMap wrong line numbers

[Tom Carchrae]

I really like SuperDevMode - despite it's bleeding edginess.  The compile times are great, and I love being able to trace between JS code and GWT code.  The fact that I can see JS errors makes life so much easier.

But alas, SourceMap, your line numbers don't seem to line up with the Java source.  

Am I doing something wrong?  Is there something I should reset/delete/re-compile that could be causing this?  

At the moment, I am toggling Dev Mode On/Off after a change.  The code seems to change in the SourceMap, but the line numbers are nearly always wrong.