rwelke

As no one on this forum seems to be "into" Apple, the following is a self-Q&A. A combination of my perseverance and willingness to try things out, and various suggestions over a four-day period from Matt at Universal Devices resolved the problem (for me). How you might ask? OK, with Big Sur you have to go to System Preferences | General | Prefer Tabs and set it to "in full screen" (not "always"; which is the default setting). After that, if everything else is working, you'll now see a normal UN/PW prompt screen. If you don't do this, you'll get a screen that seemingly only asks for your PW but your O/S is (nearly) fully occupied with the app and is non-responsive. So, the change in System Preferences (above) rectifies (and is needed) to move to Big Sur (and later).

I'm strictly Mac here. And, yes, it's quite likely a Mac/Java problem as you note. I'll try the help ticket route. Thx.

Quick background: Moved to another house but kept the ISY 994I. Current version 4.7.3. Couldn't update Oracle Java, so followed Oracle's instructions for Mac to uninstall it and associated files. Installed. Cleared out Java caches and re-loaded the ISY JNLP. Also did a factory reset on the ISY. Finds the ISY but only the local IP address (10.0.....). Open Admin console with it. System Monitor shows it in "race" condition (100%+ cpu load). Entire system unresponsive. What displays is: Password (no username). Cursor jumps (stutters) when placed over the entry for PW. Suggestions on what might be going wrong, please?

Moved to a new house with previous ISY. ISY Launcher came up. Admin console started but "raced" (100% CPU). Couldn't enter UN/PW. Decided to redo Oracle Java from scratch as it wouldn't update (something about an XPC connection error). SUDO'd the files, per Oracles uninstall instructions and cleared the cache (per Oracle), then reloaded latest version of Oracle Java. Cleared cache, obtained latest version of ISY Launcher from UDI. Found both local (10. ...) and the URL. Clicked on URL and selected Admin Console. All I got was the Mac OSX's spinning ball. So ... reset ISY (v.4.7.3) following the recommendations from a prior posting and tried again. Same result. Internet light is blinking; URL and local network results are the same as before. UUID same as S/N on back of device. Fed the URL to ISY Portal but it comes up with a message saying "requires Java 2+" Thoughts?