Error: "Assembly with name 'UnityEditor.StandardEvents' already exists (Packages/com.unity.standardevents/Editor/Editor.asmdef)"

Question

I just updated my unity to 2018.1.0f2 and it is giving me this error: "Assembly with name 'UnityEditor.StandardEvents' already exists (Packages/com.unity.standardevents/Editor/Editor.asmdef)" Any idea what I should be doing to avoid this.

Answer 1

To fix this issue:

• I opened folder C:\ProgramData\Unity\cache\npm
• Then inside, removed every folder other than packages.unity.com

Answer 2

I got the same error, and solved it with the following steps:

1. Uninstall unity
2. Open this path

   C:\Users(name of your account)\AppData\Local\Unity

Remove all folders and files

3. Install unity

Answer 3

remove all foder in project but keep folder asset and project setting, *.sln