I have a problem, a friend exported 3D model from 3DS Max so I imported it in UDK.

Everything works fine as long as I don't touch Roll and Pitch.

I don't know what's the problem, when I change Pitch to 90 degrees ( of course, presented in URU ), my Roll of the 3D model changes ( basically, when I change Pitch value in the code, I can see my object Rolling in 3D space ), and vice versa.

Do you have any advice on exporting from 3DS Max?

Thank you.