Okay... we had a series of transactions occur in the month of Nov into a select few accounts, when the YE posted into RE it balanced fine for that month.  We had the same series of transactions occur for the same accounts in the month of Dec. for identical dollar amounts, however when the YE post took place for this batch it was unbalanced. It appears that the unbalanced amount was due to the YE post for one account being exactly double what it should have been.  
 
Because of this problem, our balance sheet is not balanced... however, our Liability & Equity is balanced to our P&L.
 
I hope this explanation made some sense. Can anyone please steer me in a good direction??