BIK: Full Body IK Solver

I cannot get rid of this message:

The following modules are missing or built with a different engine version:

UE4Editor-FullBodyIKPlugin.dll
UE4Editor-FullBodyIKPluginEditor.dll

Would you like to rebuild them now?

I’ve replaced the build ID as directed, but no luck. I’ve told it to rebuild and it fails. I recompiled my project externally and it compiles OK, but the message persists. How to fix this?