The copy project link has stopped working for us after a recent update of plugins. When clicking the link, we see an 'ERROR' link under the box for the new project name, and when clicking that or the 'OK' button we get the following:

HTTP ERROR 404

Problem accessing /job/Folder//checkJobName. Reason:

    Not Found

We are using the Folders plugin, and there was a recent Folders update which changed some APIs - not sure if related.

This prevents us from using the copy project plugin.