While trying to install the component i get this error:

Component installeren: Een ander component maakt al gebruik van de map: /www/g/e/k/gekopwebdesign.nl/public_html/Joomla/administrator/components/com_booking

Translation: Installing component: another compnent is already using the file:
/www/g/e/k/gekopwebdesign.nl/public_html/Joomla/administrator/components/com_booking

But there isn't an component who uses it (i checked it several times) and there isn't an file with this name.
What do i do now?