# Ground Control Doesn't Recognize Mastercam Posts as NC Files
**URL:** https://forums.maslowcnc.com/t/ground-control-doesnt-recognize-mastercam-posts-as-nc-files/1640
**Category:** Software
**Created:** [December 23, 2017, 8:37pm UTC](https://forums.maslowcnc.com/t/ground-control-doesnt-recognize-mastercam-posts-as-nc-files/1640 "2017-12-23T20:37:37Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@MarmadukeMSB](https://forums.maslowcnc.com/u/MarmadukeMSB)
#### Post date: [December 23, 2017, 8:37pm UTC](https://forums.maslowcnc.com/t/ground-control-doesnt-recognize-mastercam-posts-as-nc-files/1640/1 "2017-12-23T20:37:37Z")
Hey all.
Any ideas why a mastercam post would not be recognized as .NC file? Ground Control lets me see the file. But when I attempt to load it, I get an error saying that it can open only open .NC, .txt, etc. I’ve got the machine successful running off posts from makercam. 🤷♂️
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### Author:  [@Gero](https://forums.maslowcnc.com/u/Gero)
#### Post date: [December 23, 2017, 8:44pm UTC](https://forums.maslowcnc.com/t/ground-control-doesnt-recognize-mastercam-posts-as-nc-files/1640/2 "2017-12-23T20:44:50Z")
Hi,
What ending does the file have? Would you share the file for testing?
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### Author:  [@MarmadukeMSB](https://forums.maslowcnc.com/u/MarmadukeMSB)
#### Post date: [December 23, 2017, 8:50pm UTC](https://forums.maslowcnc.com/t/ground-control-doesnt-recognize-mastercam-posts-as-nc-files/1640/3 "2017-12-23T20:50:59Z")
The file ends in .NC
It appears I’m too new a user to upload. I’ll try to link to my google drive.
[https://drive.google.com/open?id=1EmU5Kcevbq4VQclC6W-HvwWn1bKYEYQ5](https://drive.google.com/open?id=1EmU5Kcevbq4VQclC6W-HvwWn1bKYEYQ5)
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### Author:  [@Gero](https://forums.maslowcnc.com/u/Gero)
#### Post date: [December 23, 2017, 8:57pm UTC](https://forums.maslowcnc.com/t/ground-control-doesnt-recognize-mastercam-posts-as-nc-files/1640/4 "2017-12-23T20:57:13Z")
You have found a bug that .NC will not even show the file to me. Renaming it to .nc solves it. @bar will likely add the capital letters to the allowed list, so in the next version it should work.
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### Author:  [@Gero](https://forums.maslowcnc.com/u/Gero)
#### Post date: [December 23, 2017, 9:04pm UTC](https://forums.maslowcnc.com/t/ground-control-doesnt-recognize-mastercam-posts-as-nc-files/1640/5 "2017-12-23T21:04:55Z")
If you want to try GitHub 😉 you can create a new issue under GroundControl.
The title would be something like: GroundControl does not load .NC (with capital letters)
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### Author:  [@MarmadukeMSB](https://forums.maslowcnc.com/u/MarmadukeMSB)
#### Post date: [December 23, 2017, 9:06pm UTC](https://forums.maslowcnc.com/t/ground-control-doesnt-recognize-mastercam-posts-as-nc-files/1640/6 "2017-12-23T21:06:50Z")
Thanks Gero. Worked like a champ. I was hoping for something simple. 🕶
I’ll get it on the issues list.
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### Author:  [@Bee](https://forums.maslowcnc.com/u/Bee)
#### Post date: [December 23, 2017, 9:10pm UTC](https://forums.maslowcnc.com/t/ground-control-doesnt-recognize-mastercam-posts-as-nc-files/1640/7 "2017-12-23T21:10:49Z")
@MarmadukeMSB
Welcome to the group. Sorry this bug got ya. Glad you caught it and it can be addressed.
Thank you
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### Author:  [@bar](https://forums.maslowcnc.com/u/bar)
#### Post date: [December 24, 2017, 12:07am UTC](https://forums.maslowcnc.com/t/ground-control-doesnt-recognize-mastercam-posts-as-nc-files/1640/8 "2017-12-24T00:07:45Z")
Should be an easy fix! Great catch on what the issue was @Gero!