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Not saving in gcode

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I am drawing on a iMac  OS 10.13.6

with 123D design  and fusion 360 2.0.4571

printer UM 3E


drawings from 123D design in **stl.   and loaded in Cura 2.6.2  the gcode are correct for the printer UM3E.

drawings from Fusion 360, Cura 2.6.2 started earlier correct and the codes are correct for the printer UM3E.


but with CURA 3.4.1  and also with Cura 3.5.0  the extension is of the file tot the printer **.gcode.gz 

but the file is very small only 1 MB  instead of 10 - 80 MB. 

the printer say "This printer job is not suitable for this printer"

I scrolled all over the screen of Cura 3.4.1.  and Cura 3.5.0  but can not find the reason.


What is wrong ?


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The `.gz` extention indicates that the file is compressed, so that explains the small size.


I have a hunch (supported by a similar thread I found), that it might be a firmware issue (either missed updates or corrupted files), so you could try to update that as well.


If all else fails, for now, a workaround would be to uncompress the `.gcode.gz` file, and try to print that (or save to `.gcode` file, then print from that file)... though this is hardly ideal of course.

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