The addon freezes after deleting a device which was assigned to a preset

[justynawasiak]

1. Create a device.
2. Create a preset, at the device from 1st point and few other devices.
3. Delete the device from 1st point.

Result Addon freezes. User can't edit or delete new preset. User can't change preset or edit any preset.

1. Restart addon.

Result: Each preset works fine until clicking the preset from 2nd point. It freezes again.

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[sergeche]

Thanks, will check it out