Random Xcode error that I don't understand

Question

So i'm getting this error that says EXC_BAD_INSTRUCTION and I have no idea why can anyone shed any light on it?? the code in question in bold below. Just so you know this is using SWIFT

**actionArray.addObject(SKAction.moveTo(CGPointMake(position, -alien.size.height), duration: NSTimeInterval(duration)))**

    actionArray.addObject(SKAction.removeFromParent())

    alien.runAction(SKAction.sequence(actionArray))

Here is a longer view of the code for you

alien.position = CGPointMake(position, self.frame.size.height+alien.size.height)

    self.addChild(alien)

    let minDuration = 2
    let maxDuration = 4
    let rangeDuration = maxDuration - minDuration
    let duration = Int(arc4random()) % Int(rangeDuration) + Int(minDuration)

    var actionArray:NSMutableArray = NSMutableArray()


    actionArray.addObject(SKAction.moveTo(CGPointMake(position, -alien.size.height), duration: NSTimeInterval(duration)))

    actionArray.addObject(SKAction.removeFromParent())

    alien.runAction(SKAction.sequence(actionArray))

I have sprite.position = location and i have player.position = CGPointMake(self.frame.size.width/2, player.size.height/2 + 20) — Adam Bailey
– Adam Bailey, Commented Jul 26, 2014 at 17:22
But you are using a variable that is just position in the line that is crashing. — drewag
– drewag, Commented Jul 26, 2014 at 17:23
this is what i have for position let position:CGFloat = CGFloat(arc4random()) % CGFloat(rangeX) + CGFloat(minX) — Adam Bailey
– Adam Bailey, Commented Jul 26, 2014 at 17:28

Kylelol · Accepted Answer · 2014-07-26 19:54:30Z

1

Is your Xcode updated to beta 4 ?
Also try going to Window -> Organizer -> select your project -> choose delete next to 'Derived Data'.
I had a weird bug where my app would only run in the simulator, and give me the EXC_BAD_INSTRUCTION error if I used my device. Deleting the Derived Data fixed it.

answered Jul 26, 2014 at 19:54

Kylelol

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