Texture not being in size of two shouldnt be the problem, if your texture is not correctly sized, OZ wont crash, you will just see a milky white shinning color instead of your texture.
If after making your zone with 3DSmax, you see it loaded in OZ (textured, with all meshes), then, OZ dont find any errors RIGHT NOW (And it will mean that your texture are correctly sized), but it doesnt mean your zone is out of errors, if you compile the zone to S2D and you have errors, it mean you have done something wrong.
From my own OZ experience (see point 2 in my tuturial), i can say that most of the time, if i have an error during "creating polygon entry", its because i have one tri/quad/poly untextured, so you should check them in max, 99% of the time it will solve the problem.
If you want to resize your texture in power of 2, use whatever image software (PaintShop Pro, Photoshop, ...).
Hope that will help, and check your poly
