I guess you are missing to chech and edit your .dae file to add the 26 bones of the rigging set like can you find here
Once Collada .dae file is created, open it with any text editor (its an XML type text file), and find a string that looks like:<Name_array id="DefaultClothingItemController-Joints-array" count="26">
If it doesn't say 26, change it to 26. Just after that, add whatever bones you didn't weight after the ones you did weight (which should be there). The importer has been requiring all the bones listed. That may also have been fixed, but to be sure list them all. Ones you actually use go first, then the rest in any order. Here is a full list:
mHipRight mKneeRight mAnkleRight mFootRight mToeRight mHipLeft mKneeLeft mAnkleLeft mFootLeft mToeLeft mPelvis mTorso mChest mNeck mHead mSkull mEyeRight mEyeLeft mCollarLeft mShoulderLeft mElbowLeft mWristLeft mCollarRight mShoulderRight mElbowRight mWristRight