Hey again @jkressin , have you had the chance to review my new info?
I am currently working between 2 different virtual boxes, each with its own version (5.4.x and 5.6.x). The latter gave me the results in the last couple of comments.
On 5.4.x I just get the same old blank page after installing sentinl (always functioning normally before sentinl). I also have an issue open on their repository, but no replies so far… All help is greatly appreciated, and you guys are doing a great job!