Hey there,
I am really sorry for the delay of this reply as it is a weekend for us here.
The reason why you hitting this issue is because that is previous bug installation in Joomla 3.3.6, after we fixed in this launcher file
JoomlaFolder/administrator/components/com_komento/setup/controllers/install.post.php in this current latest version, it will not affected with your existing install.post.php file because when you upload launcher installer or update via Komento backend dashboard, it will not override the fix in that install.post.php file.
But you have to use following method to fix this :
1. Download the Full installer from your dashboard then upload through your Joomla backend installer page.
2. Or download my attached file and replace into above file location then upload the new launcher installer again from backend.
By the way, I already manage to update your latest version of Komento, can you give it a check?