Thanks for the info about 'locationtag'... I was already wondering how that's meant to be used smile.

How is the location actually found in the case when the software is started? There's this "extra" open() with the correct location at the end of the second strace above...

Anyway, I'd be happy when you try to fix it... I'm surely not going to beat you here anyway smile. But if you should give up, I'd give it another try! Thanks.

A mind is like a parachute. It doesn't work unless it's open. [Frank Zappa]