I'm not sure this was it, but I did get a debug.log message of permissions on my www/images folder. I went and check all my file permissions and didn't look like plugins was owned by www-data. I don't know if that fixed it for me... or if it was even a problem (I didn't think to check on the plugin first).
As for @manuel et al... the warning: database is stamped as v4.2.1 hopefully is just literally a record in the database that needs to reflect the newer upgrade version. But I am reluctant to just change the version stamp in the database, thinking that maybe the database has to run some update queries to actually get it up to the correct version.
I'm waiting on some direction here or from a Revive team member to help us all out with this question/issue.