Rated 5 out of 5 stars
As reported by several people in support this no longer functions correctly in Firefox 23 beta or 24. All add-ons, userstyles, userscripts & plugins are designated as disabled. Doesn't appear to be supported anymore, which is a shame as this was always one of the first add-ons I installed.
Many thanks to Ingo (The Developer) for his feedback and the latest update to AIOS which returns functionality in FF23 beta.
As reported above - the sidebar doesn't hold its settings - just want icon but it reverts to icon + text at restart not a big issue for me, as the main functions work perfectly!
AiOS is still alive :-)
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