Mac os X intermittent weirdness High Sierra, Splunk Enterprise install

[nevetsanderson]

So Im real new to Splunk, Just go an install up and running trying to run thu the tutorials etc.

I've uploaded some data files

Situation is this
Some times Splunk will work
Some times it fails - even when I'm searching over all time
Some times the search that worked won't work a second time
Some times re loading helps
It fails more than it works

Am I doing something real silly? Or do we have a buggy install or something?
Mac os X 10.13.6
splunk-7.2.6-c0bf0f679ce9-macosx-10.11-intel.dmg

Any thoughts greatly appreciated

Will try on linux next

Thanks