No. Well, maybe. I don't have an SCE that spawns seekers, although I do have some MCE's which have decided to spawn electro-blaster as well as trigger crates.

But thanks, now that you mention it, I think I may have found a problem which could be fixed.

Edit: Yes. I accidentally had a generator where I should have had an event 255 which created a seeker MCE where I was trying to build a trigger crate. Thanks

Although now you all are doomed! My level shall be entered and it's awesomeness will certainly win!