On 17/11/2022 20:08, Martin Sluka wrote: > Hi, > > in that dataset there are empty object. They may produce problems. > > line wall > endline > > line wall > endline Fixed them, I hope! https://therion.speleo.sk/wiki/contrib:complimentarycaveapps#other_applications Scroll to the bottom, I'll send a separate email about table of contents Andrew