Azure Electricteeth

Hi all, I having this problem whereby, after clicking skin weights my upload button gone, I have read the following thread : http://community.secondlife.com/t5/Mesh/upload-button-dissapears-after-ticking-quot-skin-weights-quot/td-p/1066067 And also trying out all ways that is mentioned in the thread but still could get the upload button light up. I am used blender2.49 and 2.59 both, I used kirsten viewers in pc and mac. All uploads are failed. So i send the the file to a friend, sent my blender working file and also DAE file. Both are able to work and rigged in world. What could it be the problem? as she using the same file as me but mine isn't uploading at all?