id	summary	reporter	owner	description	type	status	priority	component	severity	resolution	keywords	cc	release
7259	Failed to install with Trac 0.12	tjb@cea.com.au	bobbysmith007	Just created 2 new trac projects, and went to install the TiminsAndEstimation plugin. We already use this plugin on other projects. The trac-admin <envname> upgrade failed with this error message\r\n{{{\r\nAttributeError: 'NoneType' object has no attribute 'rollback'\r\n}}}\r\n\r\nWe have recently upgraded to Trac 0.12 - as released a few days ago. Have previously been using 0.11 with this plugin, and 0.12dev (various revisions) with this plugin too, including installing in new projects	defect	closed	normal	TimingAndEstimationPlugin	normal	fixed			0.12