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Question by ManaAura · Aug 14, 2017 at 04:08 PM · editortimeline

`Timeline' does not exist in the namespace `UnityEditor'. Are you missing an assembly reference?

how do i solve the error below:

Timeline' does not exist in the namespace UnityEditor'. Are you missing an assembly reference?

code causes this error:

using UnityEditor.Timeline

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avatar image hoekkii · Aug 14, 2017 at 05:02 PM 0
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What are you trying to do? This error occurs when a namespace does not exist. So how to solve this particular error? Just remove the line ;)

avatar image tanoshimi · Aug 14, 2017 at 05:55 PM 0
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Yeah, pretty much exactly as the error states - there's no class called Timeline in UnityEditor, so stop trying to use it.

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Answer by ManaAura · Aug 15, 2017 at 01:19 PM

Either add the UnityEditor.Timeline DLL into the current visual studio project, or put it with editor scripts.

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Answer by andreymig · Jan 24, 2019 at 10:19 AM

It just happened to me for a silly reason so I'll share it here in case I'm not the only one.

I accidentally created a new class that was under application namespace and was NOT mono behaviour and I started seeing this bug.  Eventually I retraced my last steps and once I deleted that file the error was gone.

No idea why it happened though, so feel free to explain if you know.

(Using Mac with unity 2018.2)

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