Theme Builder

Builder 4.1.3 will not install properly on Confluence 3.3.3 through the plugin repository (it fetches version 3.3.3).
When manually installing version 4.1.3, after installing Page Information Tools 1.2.2 and Content Formatting Macros 1.6.16, it fails with the following errors:

There were errors loading this plugin. There is more information in the logs.

Cause:
There was a problem loading the descriptor for module 'Colour Scheme Change Listener' in plugin 'Adaptavist Theme Builder'. java.lang.StringIndexOutOfBoundsException: String index out of range: -1

Log extract:

2010-09-21 08:19:08,198 WARN [http-8080-3] [macro.browser.beans.MacroParameterType] get Unknown type: false
– referer: http://ubiquitic.com/admin/plugin-repository/plugins.action | url: /plugins/servlet/plugin-repository/dwr/exec/RepositoryDWR.installPluginFromExternalSource.dwr | userName: admin
2010-09-21 08:19:08,283 WARN [http-8080-3] [macro.browser.beans.MacroParameterType] get Unknown type: null
– referer: http://ubiquitic.com/admin/plugin-repository/plugins.action | url: /plugins/servlet/plugin-repository/dwr/exec/RepositoryDWR.installPluginFromExternalSource.dwr | userName: admin
2010-09-21 08:19:08,316 ERROR [http-8080-3] [atlassian.plugin.manager.DefaultPluginManager] enableConfiguredPluginModule There was an error loading the descriptor 'Colour Scheme Change Listener' of plugin 'com.adaptavist.confluence.themes.sitebuilder'. Disabling.
– referer: http://ubiquitic.com/admin/plugin-repository/plugins.action | url: /plugins/servlet/plugin-repository/dwr/exec/RepositoryDWR.installPluginFromExternalSource.dwr | userName: admin
com.atlassian.plugin.PluginParseException: java.lang.StringIndexOutOfBoundsException: String index out of range: -1