I'm not sure which build 374 exactly contains, but it's not RC2 or RC3.
A related issue was fixed RC2 (build 380), fixed some mods that were not recognizing the control chain devices - just like you reported.
Since your 374 build < 380, I suspect you might not have the fix.
Please update to RC3 and let us know if it works afterwards.
Here's a link to make it easier for you: