The cache directory doesn't seem complete to me, are you sure that's either a full path starting with a "/" and the directory exists and is writable or a relative path to the forum root dir starting without a "/" ? (Usually the web directory is somewhere around /var/www/htdocs/ or /var/www/vhosts/domain.tld/httpdocs, so it looks a bit odd to me)
The missing phrases don't have any impact on the functionality, it's just localized text which isn't found. That's something I'll fix in the next version.
If the cache directory isn't the problem, follow the instructions in this post:
https://vborg.vbsupport.ru/showpost....42&postcount=5
If there are error messages, they can be displayed via this script.