I got it to work in 4.20! Note that I am using a 3DConnexion Spacemouse Wireless.
Here is what I did in specific order:
- I downloaded the plugin (which is just a folder full of other folders which have files in them) from the Google Drive folder referenced in OptimisticMonkey’s post above (see his link above). I extracted the download onto my desktop.
- I then went to the 3DConnexion website per OptimisticMonkey’s instructions to download the “SDK” file: https://www.3dconnexion.eu/service/s…-download.html
- On the 3DConnexion website I had to register for an account. Then they sent me an email to confirm. I confirmed the account and then tried to download the SDK but it said I wasn’t registered as a developer. So I went to the developers page again and found another form I had to fill-out regarding the type of software I was developing. I just entered “plugin” as the software I was developing and filled in some additional fields. After I finished that form I was then allowed to download the most recent SDK from the 3dConnexion website. After it downloaded I extracted it onto my desktop. Inside the SDK folder is an executable file (mine was titled: 3DxWare-SDK_v3-4-0_414759.exe
- I copied that .exe file and pasted it into the plugin (which we extracted in step 1) and put it in the folder: -master/Source/ThirdParty/3DxWareSDK
- I then went to my C drive -> Program Files -> Epic Games -> UE_4.20 -> Engine -> Plugins -> then I created a folder named “-master”.
- Then I copied the plugin from my desktop (that now has the SDK saved into it) and pasted it into the “-master” folder from step 5. The result is that if you click on the “-master” folder it has another folder inside with the same name. Then inside that folder is the guts of the plugin with folders such as “Binaries”, “Config” etc etc.
I then opened up Unreal Engine 4.20 and created a new project and my SpaceMouse Wireless was working.
Thank you to , OptimisticMonkey and everyone else who made that possible. Hopefully others will also have success.