Gnucash Not Responding on close after report - Win7

[Harold Tyber]

I am unable to close gnucash ver 2.6.4-2 on a windows 7 64 bit system after
producing a report. When I attempt to exit the program, it hangs and
eventually produces a message "not responding". I then have to use task
manager to end the program. If I exit the program without having produced a
report, it exits normally. Any suggestions or is this a bug?