Already posted on the optinpop website, base fact, the new wordpress version does NOT seem to work in Chrome. If I use the version 4.0 from their website, all works just fine. Also of note, when deactivating the plugin, deleting the files, and reverting versions, something is left behind and NOT cleared from the database as after reverting then reactivating, OLD settings show in the new activated files admin area. I suspect name changes between the original optinpop and their new optinpop-yadda-yadda-yadda file structure might also be a part of the solution, I could be wrong on the later, but the previous about things left behind I’m certain because I witnessed that with the process.