I've just released version 1.1 of the Lugaru mapping tools for Blender 2.49. There is no 2.5x or 2.6x version, and there might never be one.
Get it here, as always:
http://www.alice-dsl.net/wolf.mathwig/tools/py/
This update enables pixel-perfect placement of map elements. Sadly, I still haven't touched any other aspects of mapping besides placing map elements.
If you want to use these tools, please read the first post in this thread, and follow instructions in there. Most notably, the idea is to import a Lugaru map that already contains all elements you want to use.
Also, check the thread for hints. There are quite a few hidden in here.
Here's a tip for pixel-perfect placement: Try to restrict your map element movements on axes, and change the view accordingly. You'll have a hard time telling whether the object is aligned perfectly otherwise.
So in Object mode, when you want to move an element up and left, you first go into frontal view mode (NUM1), press G to move the thing, then press X, then move it to the left, then confirm. Then, you press G again, then press Z, then move it upwards, then confirm. Then, you rotate around edges or vertices with MMB to check whether you've aligned well. You zoom in as much as you can on crucial points to make sure it's as perfect as Blender can place it. This is tedious, but yields perfect results.
Note that although placement is now pixel-perfect, rotation restrictions still apply! This means that when you rotate a map element in Blender, you should always rotate around its local X and Z axis separately. Never rotate around its local Y axis.
Furthermore, rotations around the local X axis should always be in 1° increments; rotations around the local Z axis should always be in 30° increments. This is a Lugaru engine peculiarity you'll just have to keep in mind.
One more note: scaling is uniform per model. The export script reads scaling along the local X axis, and exports that as the uniform scaling factor. Obviously, it thus doesn't make much sense to scale an object along less than all axes if you're making a map in Blender.
You can of course always ask me stuff. Good luck and have fun!