I added a plugin (Netatmo) via the Alt App Store, that went fine. However, I now want to upgrade that to the development branch version, so I look under the list of plug-ins and it is not showing.
Looking in the browser console it complains that the icon file is missing, but oddly enough it does show in the app store. It is my own plugin; UPS Sensor. Can you fix in the app store what may be wrong with the plugin definition?
Sorry should have been more clear. The issue seems with the App Store definition of the UPS Sensor plugin. That does not seem to have the icon attribute and ALTUI does not like that. However, when I look as the publisher of the app, I do see the icon specified, so I do not know why the icon seems to be missing.
I came to this conclusion after I installed your Netatmo plugin from the app store but then did not see it in the list of installed plugins. Also not seeing the culprit UPS Sensor plugin btw.