https://devzone.nordicsemi.com/f/nordic-q-a/70015/custom-project-not-building-with-thingy-91I want to modify the asset tracker application, for that I copied the &#39;asset tracker&#39; folder from &#39;ncs/v1.4.0/nrf/applications&#39; to a folder outside the ncs directory. Then I tried to build it using SES 1.4.0 but it fails. This is how I opened the projecten-USTelligent Community 13Sat, 02 Jan 2021 00:44:42 GMThttps://devzone.nordicsemi.com/thread/287077?ContentTypeID=1Sat, 02 Jan 2021 00:44:42 GMT137ad170-7792-4731-bb38-c0d22fbe4515:14266996-6db5-4f48-9a2b-a44c6dd6ac4eandrew926<p>YES! I found out why build fails. I moved my asset tracker project folder closer to C:\ and&nbsp;the build succeeded. So the path to my project folder was too long. I hope it helps somebody!</p><div style="clear:both;"></div>