Hi,
Thanks for the fast response! I fixed it somehow. It seems like unpacking the zip file went wrong with the build-in windows function. So I tried Winzip, didn’t work either. Finally, I tried to unzip it with 7zip. It opens now!
After posting this problem, I saw that one other user had the same problem and he solved it in the same way. So maybe you could mention somewhere that Windows users should try to unpack their datafile with 7zip if the programme fails to open the .xml file.
Thanks anyway!