# Cura issue **URL:** \ **Category:** Software\ **Created:** [September 12, 2015, 12:38pm UTC](https://forum.lulzbot.com/t/cura-issue/2216 "2015-09-12T12:38:18Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![MrDaviesGUFSD](https://avatars.discourse-cdn.com/v4/letter/m/67e7ee/32.png) [@MrDaviesGUFSD](https://forum.lulzbot.com/u/MrDaviesGUFSD)\ **Post date:** [September 12, 2015, 12:38pm UTC](https://forum.lulzbot.com/t/cura-issue/2216/1 "2015-09-12T12:38:18Z")
Had 2 computers set up with the latest version of curator for lulzbot directly off the lulzbot site link. I was testing 4 machines I had purchased for my classroom, and the display function for extrusion/temperature operation/filament advancement were not present on both! One had it one didn’t which made loading filament difficult. In essence I had to start a print feed filament in then restart when it was actually extruding. Temps were set in the side menu before printed. I tried reinstalling several times. No luck. Now the lab has been wiped and new versions will be loaded. Hopefully they work. Has anyone experienced this? Any fix? ---
**Author:** ![Chazz](https://avatars.discourse-cdn.com/v4/letter/c/b5ac83/32.png) [@Chazz](https://forum.lulzbot.com/u/Chazz)\ **Post date:** [September 12, 2015, 5:07pm UTC](https://forum.lulzbot.com/t/cura-issue/2216/2 "2015-09-12T17:07:34Z")
Which OS? Windows/Mac/Linux? I (and others) have experienced the control windows not displaying in Cura 14.09 under OS X (10.10 for me), but showing in the task bar. Cura 15 seemed to fix this for me. Chazz ---
**Author:** ![con-f-use](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.lulzbot.com/con-f-use/32/9297_2.png) [@con-f-use](https://forum.lulzbot.com/u/con-f-use)\ **Post date:** [September 14, 2015, 8:48pm UTC](https://forum.lulzbot.com/t/cura-issue/2216/3 "2015-09-14T20:48:44Z")
If the “display” you are talking about is the “Control” window, then you will only be able to open it after, you loaded a model (.slt) file.