This addon still works perfectly fine for me. I have not noticed any errors.
2012 October 26, Mists of Pandaria, 5.0.5 (16135 Oct 8 2012)

I have never gotten an error from this addon. Do not be afraid to try this addon because of the last updated date.

A quote from the author on the curse.com site:

Hello to all followers and finders of this little Addon of mine.
I would just like to mention that I have stopped playing WoW, and that is the reason behind the infrequent updates.

I just uploaded a new version to curseforge that ups the version number, just as in Urbins version.

For the future, I would like to keep the addon up to date by doing the uploads, i just need support from one of you providing me with the current version number that needs to be in the .toc file. (And perhaps other code changes if Blizzard makes major updates to the ui framework)

I'd want this on the minimap too

I too would like a solid line. I find that the black dots are hard to see. A solid white line with a thin black border would be more visible for me.

Is there any way to turn the dots into a solid line? I think it would be easier to see with certain map addons

Is it possible to extend this functionality to the Battlemap (the Battleground minimap)? I've been looking for an addon that will enlarge the player arrow in the battlemap for months, but no such addon exists. I use MapRuler and love it, and if it worked for the battle map, that would basically solve my problem (even though the player arrow in the battle map can't be enlarged like the in the mini map, the Map Ruler graphic would work to make it much more visibility, and tell which direction you're facing).

Please, please tell me this is possible! ;)

Thanks!

If you tell me specifically what you need, I'll do a little grunt work and ask around some of the developer forums. This is a functionality that I've been looking a long time for (well, either this or the ability to resize the player arrow in the battlefield minimap).

If it's just as you said though, and all you need is the name of the frame where the battlemap is rendered, I'll start asking around to see if I can help you.

Thanks!

Very nice add-on. I've always been thinking about something like that being a very useful addition, but never found out if there already was something like it anywhere.
It would be even better, if you could make MapRuler work with Cartographer 2 loaded.

Hm, I guess that was kind of my fault. MapRuler seems to work fine with Cartographer loaded, it's just that it's not visible while the map's background alpha value is reduced to hide the map's outer frame.
Could this be changed somehow, probably in means of layer or strata, as to have MapRuler's dots in the foreground instead, so that they won't be hidden with the map's background? (or the background layer thing of the WorldMapFrame) Sorry, I'm no expert with this stuff.

i love the idea! it is amazing! but im really sorry that your download hasnt gotten much hits yet. But it will pick up! honest!

good luck making other addons!!!

Awesome, I was actually thinking about making something similar myself!

brilliant idea!