@dusx said:

<p>@mark_m said:</p> <blockquote>Any gotchas that we know about?</blockquote> <p> Nothing I can think of. Most Add-ons are now included by default, but plugins in the external folder won't cause any issue since Isadora 4 checks the internal version numbers. We have been running V3 and V4 side by side for months, and I haven't had any issue. Of course backup before upgrading, since file format will be updated and won't be openable in V3 if you need to go back for any reason.</p>