Exception launched when running cbhealtherchecker under bin directory

c:\t2\bin>cbhealthchecker -c localhost -u Administrator -p 123456
bucket: default
node: 127.0.0.1 11210
bucket: gamesim-sample
node: 127.0.0.1 11210
................................
................................
Traceback (most recent call last):
File "cbhealthchecker", line 134, in <module>
main()
File "cbhealthchecker", line 130, in main
performer.run_report(txtfile, htmlfile, verbose, scale, debug, outputdir)
File "analyzer.pyc", line 376, in run_report
File "shutil.pyc", line 128, in copy2
File "shutil.pyc", line 69, in copyfile
shutil.Error: `reports\2013-06-06_13-59-26.json` and `c:\t2\bin\reports\2013-06-
06_13-59-26.json` are the same file