id,summary,reporter,owner,description,type,status,priority,component,severity,resolution,keywords,cc,release
7450,Error on Upgrade,max@…,coling,"Hi,
I'm having trouble after installing the plugin. When I upgrade the project I'm given the error 

Microsoft Windows [Version 6.1.7600]
Copyright (c) 2009 Microsoft Corporation.  All rights reserved.

C:\Python25\Scripts>trac-admin \projects\it upgrade
ClientsPlugin needs an upgrade
 * Upgrading db
Creating client table
 * Upgrading reports
AttributeError: 'NoneType' object has no attribute 'rollback'

Any assistance in resolving this issue would be appreciated 
",defect,closed,high,ClientsPlugin,major,fixed,,,0.12