Hi Andre,

re:
> I just tried out the v4 beta and I noticed that the right mouse button doesn't cancel actions anymore.

That's correct, that's a change to the default behavior discussed previously here:
http://moi3d.com/forum/index.php?webtag=MOI&msg=8966.13

You can switch it back to v3 behavior by an option in moi.ini . Go to Options > "Edit .ini file", and find this setting:

[View]
<...>
DoRightClickCancel=n


Set it to say =y instead and you should get the old right-click canceling behavior back.

- Michael