Please test if the following command works? If not, then this is bug with bzr, and not qbzr
bzr dif --using="C:/program files/winmerge/winmergeu.exe" -r revid:<email address hidden>:<email address hidden>
Please test if the following command works? If not, then this is bug with bzr, and not qbzr
bzr dif --using="C:/program files/winmerge/ winmergeu. exe" -r revid:<email address hidden>:<email address hidden>