It keeps working for me – but I cannot access the setting pages of W3TC anymore. Neither can I go on the W3TC dashboard.. Or empty the cache or something similar.
(this is using Nginx).
Whenever I try to go there – I get the message:
No Update Required
Your WordPress database is already up-to-date!
And if I click continue I’m redirected to the homepage (not dashboard – but “openmtbmap.org” homepage).
Here is the link…
https://openmtbmap.org/wp-admin/upgrade.php?_wp_http_referer=%2Fwp-admin%2Fadmin.php%3Fpage%3Dw3tc_dashboard%26w3tc_flush_pgcache%26_wpnonce%3Dea8446b468
Well – after uninstalling (really uninstalling everything including the settings and the cache) and reinstalling W3TC it’s working again. Dunno what happened though. Everything else kept working fine.