# can't stop working.

**URL:** https://forums.openmv.io/t/cant-stop-working/998
**Category:** OpenMV Boards
**Created:** [November 14, 2018, 6:25am UTC](https://forums.openmv.io/t/cant-stop-working/998 "2018-11-14T06:25:06Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![johnkim](https://avatars.discourse-cdn.com/v4/letter/j/4bbf92/32.png) [@johnkim](https://forums.openmv.io/u/johnkim)
#### Post date: [November 14, 2018, 6:25am UTC](https://forums.openmv.io/t/cant-stop-working/998/1 "2018-11-14T06:25:06Z")

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Hello.

Run openmv ide 2.0.0 on macOS 10.14.1.  
If click start button and run the example(find-barcode) file, it will start normally. but if click stop button, the camera(M7) LED will light up in white and ide and camera is freezing.  
Removing openmv ide and reinstalling a new one is the same phenomenon.  
What should I do?

And fails to update the firmware.

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<div class="post-metadata">

### Author: ![kwagyeman](https://yyz1.discourse-cdn.com/flex029/user_avatar/forums.openmv.io/kwagyeman/32/4_2.png) [@kwagyeman](https://forums.openmv.io/u/kwagyeman)
#### Post date: [November 14, 2018, 5:23pm UTC](https://forums.openmv.io/t/cant-stop-working/998/2 "2018-11-14T17:23:25Z")

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This issue is related to some USB commands being joined when sent to the camera. I can cut another version of the MAC IDE that may fix the issue. I can do this tonight if needed. Otherwise, if you have a windows or linux VM things work more smoothly on that. We’ve noticed a small percentage of Mac machines join USB commands going to the OpenMV Cam causing problems.