you have try to uninstall (complete) tapatalk
and install again?
i check .xml file to upload other friend (tapatalk support forum) and find all commands search this path .../mobiquo/ or MOBIQUO_PATH you have check ADMIN CP => SETTINGS => OPTIONS => TAPATALK
Tapatalk Plugin Directory
Advanced Use Only. Change it only if you did rename the Tapatalk plugin directory. And the default value is 'mobiquo'. If you have installed Tapatalk plugin in different directory, you will also need to apply the same settings in Tapatalk Forum Owner Area at
http://tapatalk.com/forum_owner.php
in my case and works fine all plug ins
install whole VB package to root /public_html/ or /www/ and not have any problem.