Hi @stevenp,
thanks for sharing more data but I still struggle to make sense out of it. 
It clearly says you are using Check_mk version 1.2.6p12. I just tested it on my system and it always shows me the installed Checkmk Server version. Are you sure you that you are on the right site?
The other error messages are related to wrong user permissions. That means your site user (spigatto?) got no permissions to write into the needed directories.
From your provided information I can’t see that you are running version 1.6.0p30. It looks like a really old installation of Checkmk because the paths are also very different to mine.
Can you please verify that and come back with some feedback?
Thanks in advance!
Norm