Could you explain number 3? the description "a bit dodgy" doesn't really give much of an idea of the issue.
A lot of times you can't select a face no matter what angle you turn your model.
I have also experienced this, it's quite odd. You usually have turn on or off the 'Front' or 'Back' face selection tabs. A lot of times you have to group and then un-group (up to 1-5 times depending on what got corrupted) the model to re-enable face selection. However, these are the fixes for me when this happens, it may not work for all of Anim8ors... well, let's just call them ...quirks.
EDIT: I tired your Demo, it was very nice, little slow moving though. Built with 'Gamemaker' or C+?
Dark Basic.
There's a new bug that I don't think was in the old versions as well.
You have the drag a square selector (multiple selection tool), and you also have the pointer selector (single selection tool) OK....
So do this...
Click the top arrow, and the multiple selection tool. Now click Edit Points and faces. Instead of the multiple selection tool being selected, the tool jumps over to single selection.
I tend to have the habit of picking multiple selection first, so I always end up having to click it again. I've used Anim8or since about version 0.1, I'm sure that I have always had this habit, but only recently has the selector been jumping to single selection.
Anyway, this post is not intended to have gripes, it's just a post to say.. lets take a step back to the beginning before moving forwards a bit more.