When I tap on a cache on the map, the new (nice!) pop-up label opens.
If I tap on the pop-up label, the cache details page opens.
If I repeat this several times (open pop-up-label, open cache details, back button, open cache details, back button...), Locus crashes reproducably - sometimes after 2-3 iterations, sometimes after 10.
If I can produce some debug output / logs etc., please tell me.
Since there was no reply, this must have been a local problem on my device. :-\
However, after updating to Lollipop, the problem is gone. 8)
I'm sure you are not the only one with this issue - it will be probably same as here http://help.locusmap.eu/topic/instable-since-update
Unfortunately I was fighting with it for quite a long time and seems it's unable to solve it by any way. So it's an rare issue in some versions of Android 4.4 which is already fixed in new A5