Hi Polarlys
Thank you for pointing out that I can re-use the Wellkarte qv5db file without a re-installation. That certainly simplifies the process of a re-installation.
Concerning the workaround, somehow it does not work for me. The re-imported track still crashes my system. In the meantime, I think I will continue using the 7.0.1.23 version. That is the version that has never crashed my machine when using the X-Y plot so far. But it's a pity that I cannot use the Google Satellite Map then
Regards,
Ray LEE
