Unfortunately you would need to contact Vladimir Alyamkin, the plug-in’s author about any problems related to the implementation and functioning of the plug-in itself. If time is a concern though I would suggest getting the 4.7.2 Build of the Engine from GitHub, https://github.com/EpicGames/UnrealEngine/releases/tag/4.7.2-release
Thanks for your fast answer. I’m with you that the bug may be plugin-related.
Up to now i understood patch-releases (like 4.7.2 to 4.7.3) won’t add or remove any functions or features, just fixing bugs!?? (That’s the reason i’m wondering about the effect you see above.)
That assumption is correct, hot fixes are released only with bug fixes; however, since we did not develop the plug in, we are not able to test whether a particular bug fix would break this particular plug-in. It is up to the plug-in developers to ■■■■■ and manage their plug-ins for future engine versions.