I have been working the last couple of weeks on our internal SharePoint Server 2010 upgrade and one of the last things to resolve was the remaining errors in the upgrade log. The ones that I saved for last looked like this.
[OWSTIMER] [SPContentDatabaseSequence] [INFO] [10/27/2010 4:33:33 PM]: SPContentDatabase Name=WSS_Content [OWSTIMER] [SPContentDatabaseSequence] [WARNING] [10/27/2010 4:33:33 PM]: File [Features\AVMModules\_tsafix_Setup.xoml.wfconfig.xml] is referenced [1] times in the database [WSS_Content], but is not installed on the current farm. Please install any feature/solution which contains this file. [OWSTIMER] [SPContentDatabaseSequence] [INFO] [10/27/2010 4:33:33 PM]: SPContentDatabase Name=WSS_Content [OWSTIMER] [SPContentDatabaseSequence] [WARNING] [10/27/2010 4:33:33 PM]: One or more setup files are referenced in the database [WSS_Content], but are not installed on the current farm. Please install any feature or solution which contains these files.
I had already verified no features were installed or broken in my farm so what could it be. While still looking through the logs I noticed a couple of web part or file names were familiar but I knew that these features were no longer installed. So I went digging some more, this time into the Web Part and List Template Galleries. Here is where I found left over web parts that I know where part of a feature that I removed. After doing this clean up and re-ran the Upgrade-SPContentDatabase command and the database did not generate any errors or warnings. Horray!
