Every time I try to raise a group of tiles using CM3 the tiles become unwalkable why is this?
You must have checked some other box in the various options for CM3. It is a VERY powerful tool or set of tools and remembers everything you set. So, if you use it once to make a change, it remembers that setting the next time you run it and makes that change again.
There are options to change the wok face type, likely that is what is messing you up. Be sure those are all disabled. I would also recommend that you go back to the first step where you attempted to make changes, IE reload from the beginning the various tiles you are working with, don't attempt to fix what is currently broken, just go back to the previous stage on those tiles and start again to adjust the base height. It is setup to move them upwards or downwards by 1 meter increments. Most times you will have to adjust them to raise or lower by 5 meters. Do that in ONE step, not multiple passes of raising by 1 and then raising again.
I know, sounds like I am preaching, and that is NOT my intent. Just attempting to make sure that you are actually paying CLOSE attention to the various options and re-set them to whatever you need them to do each time you run CM3. CM3 has sooo many options that you can very easily get confused or make choices you don't intend, so take it one step at a time and revert back to original settings before you decide to make changes to what CM3 is going to do for you.
The best way to raise a tile, well maybe I should say the easiest way, is to use CM3. There are also scripts that can be run from withing gMax or 3dsmax that will also allow you to raise/lower objects. Those scripts take a bit more attention to details to use correctly, but they will work. There is also manual ways to attempt to raise a tile, but doing it that way leaves soooooo many ways to screw things up that it truly is not even worth discussing. Veltools for gmax has a script under one of the many menus that will allow you to raise/lower OR there is an extra script that can be run in the list of extra tools at the bottom of the main veltools menu. You have to be very careful what object you have selected, and that object should be the tile base, not anything else, then it will raise/lower the children of the base (which means everything else in the tile) and off you go. That set of scripts can be useful for moving objects up and down while you are creating a tile, but can also destroy things if you have the wrong object selected. CM3 on the other hand does all that background work for you. You just tell it to raise the tile and it does all the correct linking and mathematics involved to ge all the objects raised correctly.
For single groups or individual tiles, CM3 is the easiest way to do it, and it can also be used to raise an entire set. What it can not do is determine if only some tiles need to be raised. So, you have to manually choose what tiles you are working with.
