Now I get this error:
https://imgur.com/fprG03Q when exporting. Starting the exe with elevated rights (as Admin) doesn't help. edit: Oh, the export works though! edit2: Empty Page 0 entries provoke the error:
https://imgur.com/VXzVEch
Installer works and is English now. I think I might have seen some Dutch in the status, but that went by too fast.
edit3: Most likely my db is broken I think. If you want to investigate here is the export:
http://pastebin.com/rK2LYp6g