My apologies, forgot to reply here. So the issue was indeed in specifying version of the Engine as 4.16.1 and it should be 4.16.0. This is somewhat new I think as 4.15 compatible version of plugin had 4.14.3 written in .uplugin as engine version.
My apologies, forgot to reply here. So the issue was indeed in specifying version of the Engine as 4.16.1 and it should be 4.16.0. This is somewhat new I think as 4.15 compatible version of plugin had 4.14.3 written in .uplugin as engine version.