Crash with transaction report.

[Richard Dawson]

I have been maintaining my accounts on gnucash since 2002.  Recently I 
came across a balancing error in one account.  suspecting that I had 
accidentally deleted or altered a transaction,  I decided to create 
transaction reports from the current file and from an earlier backup so 
I could compare them transaction by transaction.

When I attempted to run a transaction report for the entire history, I 
got a message in the transaction report window that an error had 
occurred, and then gnucash ceased to run.  I restarted gnucash and it 
opened with the file seemingly none-the worse for the experience.

Thinking that perhaps a single transaction was somehow corrupted, reran 
the report with only the last month, then the last two months, etc, 
until the problem recurred.  I was able to print out reports or the 
period 6/1/2014 - today.  If I went back further, gnucash crashed again.

I then attempted to create reports starting with the earliest 
transaction and ending before 6/1/2014.  Guncash crashed again.

Then I tried incremental reports starting at the beginning:  these were 
the results
report period                     Result
1/1/2002-12/31/2002            OK
1/1/2003-12/31/2003            OK
1/1/2002-12/31/2003            Crash
6/1/2002-5/31/2003              Crash

How can I trouble shoot this.  Is there any utility for verifying the 
integrity of the file?  For repairing the file?

Thanks in advance for any help.

Richard