To run Gateway 10.22 or later, you need to use the latest version of IBC.jar available on the IBC Github repository (but not yet available via a release zip file).
?
See this post:
/g/ibcalpha/message/2042
That¡¯s slightly out-of-date, as the latest available IBC version is now 3.16.4-beta.2.
I really must make the effort to do another proper release very soon. Apologies for the delay.
Richard