Can't launch 4.23

[remozseo]

After installing the new 4.23 I am getting this error message.
What do I have to do in order to run 4.23?

Yes and No - both options do NOT launch the latest and greatest Unreal Version.

Thanks for any help!

[UE4 Archviz]

error itself in answer. install 4.23 datasmith importer.

[Stephen Ellis]

Yes, please update to the latest version of the Datasmith plugin. You may have an "Update" option under the "Installed Plugins" section, if you participated in the Previews. Or you can choose "Install to Engine" on the Unreal Datasmith plugin located further down the Launcher's Engine > Library page.

[remozseo]

ok.. for some reason the installation failed .. but after uninstalling and re-installing the entire package.. it worked.. thank you very much!

[Scott Dombrowski]

We ran into the same issue with the preview build. "Update" didn't work and resulted in the above error. A full uninstall/reinstall of the build fixed it. I didn't think to try to manually update the Datasmith plugin because in the past the plugin would have the little orange "i" icon indicating it needed updating, but when I would try to update it, I'd get an "already updated" message. <shrug>