Welcome to this forum jonas5188!
It seems that something is corrupted and a de-installation does not remove it.
I suggest that you try again to de-install OOo, then use a product like CCCleaner which will remove any leftover entries from the registry. Do the same with Java. Then, download again the official version of OOo from the official web site (http://www.openoffice.org
), use the default folders for the installation and let us know the result.