Completely Remade Code. There was way to much wrong to list. Hopefully this should be what you want but I don't fully understand the concept of that image so this was basically made off the script I could tell what was happening.

main()
{
	level.timeToWait = 30;
	level.floor = 0;
	Ent = StrTok( "intrig1|outtrig1|intrig2|outtrig2|plat|level1|level2", "|" );
	for( i = 0; i < Ent.size; i++ )
		Trig[i] GetEnt( Ent[i], "targetname" );

	for( i = 0; i < 4; i++ )
		Trig[i] thread Trig_SetUp( Trig[4] );
	Trig[4] thread MoveTopDown( Trig[0], Trig[1], Trig[2], Trig[3], Trig[5], Trig[6] );			
}

Trig_SetUp( Trig )
{
	self waittill( "trigger" );
	Trig notify( "TriggerActivated" );	

	self thread Trig_SetUp( Trig );
}

MoveTopDown( Trig1, Trig2, Trig3, Trig4, Trig5, Trig6 )
{
	self waittill( "TriggerActivated" );
	NewTime = level.timeToWait + 10;
	if( level.floor == 0 )
	{
		self MoveTo( Trig5.origin, level.timeToWait );
		level.floor = 1;

		Trig1 enable_trigger();
		Trig2 enable_trigger();
		Trig3 disable_trigger();
		Trig4 disable_trigger();
	}
	else
	{
		self MoveTo( Trig6.origin, level.timeToWait );
		level.floor = 0;

		Trig3 enable_trigger();
		Trig4 enable_trigger();
		Trig1 disable_trigger();
		Trig2 disable_trigger();
	}
	wait( NewTime );

	self thread MoveTopDown( Trig1, Trig2, Trig3, Trig4, Trig5, Trig6 );
}

got this error

(Image removed from quote.)

Trig = [];