Warning: Gimbal Lock Exists When Exporting to FBX

[Anonymous]

 I'm trying to export a simple ball-and-stick model with several placeholder animations to FBX format, and am running into the following error:

The FBX file format cannot represent the transformation of some nodes in the scene due to the limitation of FBX SDK. To avoid this, adjust Bone binding matrices of the problematic Skins.
The following Bones will have incorrect Bone binding matrices under the associated Skins:
-Bip001 Pelvis
-Bip001 L UpperArm
-Bip001 Spine1
-Bip001 L Forearm
-Bip001 L Hand
-Bip001 R Hand
-Bip001 Head
-Bip001 L Calf
-Bip001 L Thigh
-Bip001 L Clavicle
-Bip001 Spine
-Bip001 R Forearm
-Bip001 R UpperArm
-Bip001 R Calf
-Bip001 R Thigh
-Bip001 R Clavicle
-Bip001 L Foot
-Bip001 L Toe0
-Bip001 R Foot
-Bip001 R Toe0
-Bip001 Dagger

The model uses Biped for its skeleton, and consists of multiple segments each skinned to a bone. I'm very confused about what to do, and have tried several solutions online with no effect. Would anyone be able to point out what's happening? I've attached my .max file below if it helps.