I would actually guess that we can't find 'diff.exe', it isn't a program that we bundle with the installer.
You could try doing "bzr diff --diff-option -w -Derror" and we can check the traceback.
I'm pretty sure you need to install diff separately (as you do on Ubuntu, but it is almost always there) http://gnuwin32.sourceforge.net/packages/patch.htm
is one possibility, I think there are others.
I would actually guess that we can't find 'diff.exe', it isn't a program that we bundle with the installer.
You could try doing "bzr diff --diff-option -w -Derror" and we can check the traceback.
I'm pretty sure you need to install diff separately (as you do on Ubuntu, but it is almost always there) gnuwin32. sourceforge. net/packages/ patch.htm
http://
is one possibility, I think there are others.