Have you merged the newly created .gla with the base _humanoid.gla? Essentially, when you export a .gla you only export the animations you currently created or modified. Also, make sure that the animations you created are keyframed, and make sure the frames you're setting actually exist (set the Start and End frames to have a range to work with). I'm not completely sure how it works, but for the record, I usually leave the first frame totally empty, with the skeleton in its T-Pose. Keyframe every single animation frame you intend to export, Insert Keyframe (I) -> Whole Character (W). Export and merge the two .gla files (yours and the base _humanoid.gla) with GLAMerge: http://jkhub.org/files/file/1471-glamerge/ Modify the animations.cfg file in the _humanoid folder so that the old animation frame set is replaced with the new. For example, suppose you want to replace the fast stance animation: BOTH_SABERFAST_STANCE 13052 2 -1 20 Should be modified to: BOTH_SABERFAST_STANCE 21377* 2 -1 20 * total amount of frames (21376) plus the new ones you added to the _humanoid.gla. Hope this cleared things up a bit. If there's anything else, ask away!