[quote=“, post:1880, topic:30020”]
Did you all install in the engine plugins directory?
Yes, I copied the plugin files into the Engine Directory (“C:\Program Files\Epic Games\UE_4.20\Engine\Plugins\AdvancedSessions”)
That worked perfect in 4.18 and 4.19.
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I have packaged dozens of times in 4.20 but always with it in the project level plugins.
How do you install the plugin on project level?
I followed the discription you posted in this threads first post:
[quote=“, post:1880, topic:30020”]
Setup Info
- Extract the file inside the zip to ProjectFolder/Plugins/AdvancedSessions (create /Plugins/AdvancedSessions if you have to) Or UnrealEngine/4.15/Engine/Plugins.
- If installed at the project level you need to Create a C++ blank file in the editor to allow it to package out the plugin - If installed at the engine level you do not need to do anything else.
To be honest I didnt fully understood the “If installed at the project level you need to Create a C++ blank file in the editor to allow it to package out the plugin”-part, im not really a coder … My project is 100% made of fancy blueprints… 
If I create a “Plugins” folder in my projects directory and copy all the plugin files from the zip into it, I can’t find the plugin in the Plugins Browser … Its only appears in the list when I install it on Engine Level. o.O
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It actually looks like filepath string is too long, and there isn’t much I can do about that besides rename folders…
If that really helps!! 