Tnx Tigga..i did it the 'non sleep' method by deleting all the templates in phpmyadmin and then import a fresh vb language. It worked.
Ofcourse i have to spend more time to find the solutions for other problems such as the calendar and the login block and the full url's and where to put them. This is a great addon and i hope you can make an update soon where all those problems are history.