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java.lang.StackOverflowError coming frequently (Talend MDM)

This is same topic as in . The error is coming frequently when any job contains 9-10 numbers of sub-elements. This is a kind of show-stopper error as the same sub-elements is running fine in another job with same input. I am using Talend Open Studio For MDM (Version: 5.2.0M1). Please help. Is there any limitation of sub-elements?
Any solution/clue will be great.
Thanks -