Im trying to run a script in ScriptEffectUpdate block using a spell but the spell only goes through the update block once and finishes instantly after casting even tho the effect duration is set to 10 sec, what gives?

Also another question, in my script i move a bunch of skulls into a place where they are supposed to collide with eachother and explode, sometimes it works but sometimes they just hang there in midair doing nothing until i go with my character and collide them or throw something at them or whatever. I suspect their physics is disabled after a period of inactivity to save cpu but is there a way to reactivate it somehow just before i teleport them?

1. You could have an error in your script. Post it up?

2. Don't use MoveTo, use PlaceAtMe instead. It enables havoc on spawned items. If you must use the MoveTo, then you may need to cast an explosion spell at the pile to enable havoc on them.

Turns out script spells dont run too well on dead npcs (which is what i was casting it on), thats why it finished so soon. PlaceAtMe isnt really an option since the amount of skulls im spawning would soon clutter the savefile to hell and im trying to keep my scripts in vanilla oblivion, as for the explosion there actually already is one in the exact next frame the skulls appear and it seems to have no effect but maybe i need to delay it more to make sure.

If you use moveTo, then there are some things you need to do with disable and enable to get the objects 'collision' and thus havoc in the same location as the visual object is.

ive tried all kinds of variations of disabling/enabling the objects during the effect but no luck

Did you follow this? http://geck.gamesas.com/index.php/MoveTo

You also will need to cause an explosion to start them moving. MoveTo does not make havoc work on the object by itself.