plugin trouble

[EmCy90]

In the Feed Viewer example of the ext js4 i found plugins:

plugins: [{
                    pluginId: 'preview',
                    ptype: 'preview',
                    bodyField: 'description',
                    expanded: true
                }]

in the viewConfig property of the gridPanel, but when i added it to one of my custom coded it won't work and in the error console gives me that namespace is undefined .

[stevil]

That preview is in the user extensions code under examples, and won't load with ext-all or ext-all-debug - have you enabled the Loader, and told it (via setPath) where to find the ux/ folder? Running Fiddler or Firebug, do you see 404s?

stevil

[EmCy90]

Fixed it, the problem was that someone had moved the ux folder on the server without telling me.