I am using Community Edition 5.1. When I select the Model Manager in Admin Tools I am getting an empty page. The error log says nothing.
Do I have to install something to use the Model Manager?
No,you don't need to install anything.
Any idea what's wrong with my installation?
I'm sorry without further information it is difficult to guess.You an try to enable share client debug mode and to see what is going on.About how to enable client debug mode ,please refer to http://docs.alfresco.com/5.0/tasks/dev-extensions-share-tutorials-debugging.html
Did you notice anything in your browser development tools ?
No, the development tools showing nothing...
Is it a fresh install or did you add some AMP ?
No module was installed. At the moment I think about to install the latest version and move the actual content and database to the new installation.
Yes ,you can try to install the latest version, maybe it is a bug of your version.
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