The X file you linked us to contains all this sort of stuff:
//RemoveMeForLimitedSkeletalInformation// XSkinMeshHeader {
//RemoveMeForLimitedSkeletalInformation// 1000; // nMaxSkinWeightsPerVertex (What specifically should this be? Will a really big number do?)
//RemoveMeForLimitedSkeletalInformation// 1000; // nMaxSkinWeightsPerFace (What specifically should this be? Will a really big number do?)
//RemoveMeForLimitedSkeletalInformation// 2;
//RemoveMeForLimitedSkeletalInformation// }
//RemoveMeForLimitedSkeletalInformation//
//RemoveMeForLimitedSkeletalInformation// SkinWeights {
//RemoveMeForLimitedSkeletalInformation// "x3dc_9";
//RemoveMeForLimitedSkeletalInformation// 176;
//RemoveMeForLimitedSkeletalInformation// 144,
//RemoveMeForLimitedSkeletalInformation// 145,
//RemoveMeForLimitedSkeletalInformation// 146,
//RemoveMeForLimitedSkeletalInformation// 147,
//RemoveMeForLimitedSkeletalInformation// 148,
//RemoveMeForLimitedSkeletalInformation// 149,
//RemoveMeForLimitedSkeletalInformation// 150,
//RemoveMeForLimitedSkeletalInformation// 151,
//RemoveMeForLimitedSkeletalInformation// 152,
//RemoveMeForLimitedSkeletalInformation// 153,
//RemoveMeForLimitedSkeletalInformation// 154,
//RemoveMeForLimitedSkeletalInformation// 155,
//RemoveMeForLimitedSkeletalInformation// 156,
//RemoveMeForLimitedSkeletalInformation// 157,
//RemoveMeForLimitedSkeletalInformation// 158,
//RemoveMeForLimitedSkeletalInformation// 159,
//RemoveMeForLimitedSkeletalInformation// 160,
//RemoveMeForLimitedSkeletalInformation// 161,
//RemoveMeForLimitedSkeletalInformation// 162,
//RemoveMeForLimitedSkeletalInformation// 163,
//RemoveMeForLimitedSkeletalInformation// 164,
//RemoveMeForLimitedSkeletalInformation// 165,
//RemoveMeForLimitedSkeletalInformation// 166,
//RemoveMeForLimitedSkeletalInformation// 167,
//RemoveMeForLimitedSkeletalInformation// 168,
//RemoveMeForLimitedSkeletalInformation// 169,
//RemoveMeForLimitedSkeletalInformation// 170,
//RemoveMeForLimitedSkeletalInformation// 171,
//RemoveMeForLimitedSkeletalInformation// 172,
//RemoveMeForLimitedSkeletalInformation// 173,
//RemoveMeForLimitedSkeletalInformation// 174,
//RemoveMeForLimitedSkeletalInformation// 175,
//RemoveMeForLimitedSkeletalInformation// 176,
//RemoveMeForLimitedSkeletalInformation// 177,
//RemoveMeForLimitedSkeletalInformation// 178,
//RemoveMeForLimitedSkeletalInformation// 179,
//RemoveMeForLimitedSkeletalInformation// 180,
//RemoveMeForLimitedSkeletalInformation// 181,
//RemoveMeForLimitedSkeletalInformation// 182,
//RemoveMeForLimitedSkeletalInformation// 183,
//RemoveMeForLimitedSkeletalInformation// 184,
//RemoveMeForLimitedSkeletalInformation// 185,
//RemoveMeForLimitedSkeletalInformation// 186,
//RemoveMeForLimitedSkeletalInformation// 187,
//RemoveMeForLimitedSkeletalInformation// 188,
//RemoveMeForLimitedSkeletalInformation// 189,
//RemoveMeForLimitedSkeletalInformation// 190,
//RemoveMeForLimitedSkeletalInformation// 191,
//RemoveMeForLimitedSkeletalInformation// 192,
//RemoveMeForLimitedSkeletalInformation// 193,
//RemoveMeForLimitedSkeletalInformation// 194,
//RemoveMeForLimitedSkeletalInformation// 195,
//RemoveMeForLimitedSkeletalInformation// 196,
//RemoveMeForLimitedSkeletalInformation// 197,
//RemoveMeForLimitedSkeletalInformation// 198,
//RemoveMeForLimitedSkeletalInformation// 199,
Care to enlighten us as to what that is all about? Looks vaguely relevant. (There's many more lines like that.)
Perhaps you pressed the wrong button when you exported the file?
Did you actually look in the X file?