Issue #72 is ok when using solution below, already mentionend by another user.

[lvandenb]

Solution for me was; like

I just added:

if hasattr(a, 'rev'):
a = a.rev()
b = b.rev()

To the getrange function to check if there is a rev attribute/function that it can call. I am not 100% sure what was getting passed before or if that is sufficient to guard calling the rev method.

[mnauw]

As mentioned in #72, these issues are due to changes in recent Mercurial's internal API. They have also been reported as issues in this fork and are already fixed there (along with many other ones), see also generally #69.

[felipec]

As mentioned in #72 the fix is commit 00e95fd which is released in v0.4.