Hi- I've shared an extension panel with someone who is having difficulty getting it to open in Photoshop (the panel has been tested on a variety of systems, including Photoshop CC and CC 2014, he is running some version of one of those). He has installed it with the correct version of Adobe Extension Manager (and can see the extension panel when he clicks on Help / Manage Extensions within Photoshop). He also has "load extension panels" checked in his Photoshop preferences. But he can't find it under Window / Extensions. Any suggestions as what to do next to troubleshoot his system to get the panel working?