command: cmk-update-config -v
shows errors

in ....../etc/check_mk/conf.d/wato there are invalid characters, find them using:
grep -r "\xa0" *

replace this character through nothing:
>>> perl -pi -e "s/\\\xa0//g;" * : ....../etc/check_mk/conf.d/wato

check again: cmk-update-config -v

remove invalid mkp packages:
- to find them: mkp list
- remove them using mkp rm <package-name>

some other errors in
....../etc/check_mk/conf.d/wato$ grep -r "\\Optimiz" *
ERROR: Invalid regular expression in service condition detected: (Ruleset: ignored_services, Folder: , Rule nr: 3, Condition: Task.*\Optimiz.*, Exception: bad escape \O at position 6)
grep -r "\\Optimiz" *
> replace \\ trough a .* to get it fixed

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