BTW, If i change it into x-dem-dists: 9942,9942,9942,13248,44176 the rendering is just fine. ________________________________ Van: mkgmap-dev <mkgmap-dev-bounces@lists.mkgmap.org.uk> namens lig fietser <ligfietser@hotmail.com> Verzonden: woensdag 24 januari 2018 01:14:28 Aan: mkgmap-dev Onderwerp: Re: [mkgmap-dev] bug in r-4025 Hi Gerd I used these options: x-dem: G:\mkgmap\DEM x-dem-dists: 3312,6628,9942,13248,44176 x-overview-dem-dist=88368 The strange thing is that the img is compiled without errors but not rendered. This issue/bug is not happening in r-4066 so I guess it is "solved" but you never know. ________________________________ Hi Minko, Hard to say without detailed information about the used dem options. Errors in the dem encoder potentially cause buffer overflows/underruns in Garmin software. Maybe you can post the options used with r4025? Gerd