Cura - Errno 13 Permission Denied


I have built Cura from the git repository on Centos7. The GUI starts and appears to be working correctly but the slicing engine does not run. The terminal window from which Cura was launched shows the information listed below. It shows that /usr/lib64/python2.7/ has thrown the error “[Errno 13] Permission denied”. This is the case even when ./dev-cura is executed as root.

If you have any ideas about the cause of this or a way to fix it please contact me.



Text taken from the terminal window used to launch ./dev-cura

[ssackett@MachinationWifi cura]$ ./dev-cura
load preferences from /home/ssackett/.cura/dev/preferences.ini
Listening for engine communications on 49674
Traceback (most recent call last):
File “/home/ssackett/cura/Cura/util/”, line 404, in _runEngine
self._process = self._runEngineProcess(commandList)
File “/home/ssackett/cura/Cura/util/”, line 642, in _runEngineProcess
return subprocess.Popen(cmdList, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, **kwargs)
File “/usr/lib64/python2.7/”, line 711, in init
errread, errwrite)
File “/usr/lib64/python2.7/”, line 1327, in _execute_child
raise child_exception
OSError: [Errno 13] Permission denied

I’d suggest trying to run CuraEngine just on its own, to help figure out what is broken.

Thanks to nickthetait. The problem was fixed by running the make file for CuraEngine.

How do I get pub use cura engine I do not know how to access it please provide a link and instructions on how to

Find download and installation instructions for Cura LulzBot Edition at If you have any questions reach out to the support team at