Have been using Chrome on my Imac, but due to conflicts too often with Shockwave, started using FF. Did a Fresh dl of Lastpass universal inder FF which installed OK, checked for LP add-0n which showed that also was activated OK, but get no icon showing up in any corner, and sites thus not filling in automatic therefor. Also there was an incomplete import of LP sites from Chrome into FF. Solution not found in old forum notes.