Cache problem continues

HI all,

Need your help sorting out some weird problem in our pipeline.
We are using Geometry Cache in our pipeline. Every thing goes well but problem occurring when caching the characters having multiple objects (for ex:- A bird having multiple duplicated wings. A character having multiple duplicated bolts and nuts). When ever i cache these kind of characters, mayaUI crashes and file doesn’t save too.

I have attached some files of model, rig and cache files.

Attachment contains
Balls_Anim.ma
Balls_Cache_File.ma
Balls_Model.ma
Balls_Rig.ma

our final file is Balls_Anim.ma which has Balls_Rig.ma referenced 4 times and animated. Cache has been exported from each reference.

After exporting i have created Balls_Cache_File which has Balls_Model.ma file referenced 4 times. Now, I have to import cache to this Balls_Cache_File.

When importing cache, file is being crashed and UI is getting crashed.

Thanks in advance…

Files available at
Dropbox - Error - Simplify your life…_Test.rar?dl=0

Thanks in advance…