Hi Scott, Its a bug :) Have fixed it in git. The issue was the window name was not in LDTP format. I think this has to be documented. Will fix these issues in LDTPv2. Thanks Nagappan <div class="gmail_quote"> On Sat, Nov 14, 2009 at 7:13 PM, Wang Qi, Scott <<a href="mailto:wangqi.s@gmail.com">wangqi.s@gmail.com</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Hi, I tried the callback example at <a href="http://ldtp.freedesktop.org/user-doc/index.html" target="_blank">http://ldtp.freedesktop.org/user-doc/index.html</a> on Ubunt 9.04 with LDTP 1.7.1. It seems as soon as the first callback function 'cb' is triggered. It raise a exception. >>> onwindowcreate('Replace', cb) 1 >>> onwindowcreate('dlgFind', cbwithvarargs, 'test', 'var', 'args') 1 >>> click('*gedit', 'btnReplace') 1 >>> Unhandled exception in thread started by <function invokecallback at 0xa4f087c> Traceback (most recent call last): File "/var/lib/python-support/python2.6/ldtp.py", line 351, in invokecallback callback = _callbackFunctions.get (_responseData [1])[0] TypeError: 'NoneType' object is unsubscriptable But the callback with arguments works just fine. Is this a bug? Another observation is that it seems the default gedit installed with Ubuntu 9.04 only allow a single dialog to be pop-up in front of main window. click('*gedit', 'btnReplace') # This will pop up the Replace dialog. click('*gedit', 'btnFind') # But this one only highlight the Find button. Therefore, this example may not work any more as intended originally. Thanks Scott _______________________________________________ LDTP-dev mailing list <a href="mailto:LDTP-dev@lists.freedesktop.org">LDTP-dev@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/ldtp-dev" target="_blank">http://lists.freedesktop.org/mailman/listinfo/ldtp-dev</a> </blockquote></div> -- Linux Desktop (GUI Application) Testing Project - <a href="http://ldtp.freedesktop.org">http://ldtp.freedesktop.org</a> <a href="http://nagappanal.blogspot.com">http://nagappanal.blogspot.com</a>