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cannot edit script files, dll error
When i try to edit a script the error: "Unable to open UnityEngine.UI.dll: Check external applications preferences." shows up. This also happens when i choose any other editor in external tools preferences. I've tried setting up full permissions to this .dll file but didn't work. I'm using windows 7 64 bit, and Unity 2017.1.0f3
Thanks for any help!
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