Hi I struggled today with the DEM/hgt files in a zip. After downloading some extra and checking/rezipping finally my maps did not work anymore. I do not have the exact error anymore but it was clear: DEM HGT files not found Now it looks like if the ZIP does not have a folder but only the HGT files on the root of the zip then mkgmap does not recognize them If I rezip everything again and put the files within a subfolder first, it is oke. For me its fine, I solved 'my' issue, but if this is true it could better be in the manual or solved in code. Looks like this does not work: world-hgt.zip\N00E006.hgt world-hgt.zip\N00E007.hgt world-hgt.zip\N00E008.hgt And if I do it like this its oke world-hgt.zip\world-hgt\N00E006.hgt world-hgt.zip\world-hgt\N00E007.hgt world-hgt.zip\world-hgt\N00E008.hgt Kind regards, Joris Bo