Hello Rama,
we just played on Seton's #22930939, you can see that around min 37 and min 57 the mobile SMDs did not work (once for choco and once for mansR). In the past I had it quite often, that the mobile SMDs did not work (even if you had both, mobile and stationary, next to each other), so I always go the UEF SMDs w/o any mobile. Also the UEF's SMDs are currently the only SMD buildings which can be constructed. I'm not sure what interacts here wrong.
On some maps SMDs do not work at all, like on the Epic Water Pass where SMDs in the brown corners do not send anti-nukes #22890868
Anyway: in general these are only minor issues, it's a great mod and it's so much fun to play.
Thank you