I am having this same problem. Single uzer. By Zotero screen is blank. It worked earlier today. I tried re-installing the latest version and it is still blank.
(Please start new threads for new issues — it's usually much easier to help people individually. I've moved this to a new thread.)
As I say in the other thread, we'd want to see a Debug ID for Zotero startup through the problem occurring, using the "Restart with Logging Enabled…" option.
As I say in the other thread, we'd want to see a Debug ID for Zotero startup through the problem occurring, using the "Restart with Logging Enabled…" option.