id,summary,reporter,owner,description,type,status,priority,component,severity,resolution,keywords,cc,release 7259,Failed to install with Trac 0.12,tjb@…,Russ Tyndall,"Just created 2 new trac projects, and went to install the TiminsAndEstimation plugin. We already use this plugin on other projects. The trac-admin upgrade failed with this error message {{{ AttributeError: 'NoneType' object has no attribute 'rollback' }}} We 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