Reserve Detail and Summary Reports - Out of Balance

We are trying to run depreciation reports in R12 and are getting out of balance messages when running the Reserve Detail and Summary reports.  After looking at the reports, the problem seems to lie with the Retirements data.  No retirements are being shown on the report since our conversion to R12.  I found one note that said to run the Create Accounting - Assets request so we have attempted to do that, but the request is not finishing.  It has been running for a very long time now.  Do you have any ideas on how to fix this problem?  Thanks.