Deleting it isn't exactly the best idea..
In general terms deleting a line "isn't exactly the best idea." That's obvious. This is different.
Check through SPS 2.0 yourself. See if you see a SPS_Continue any where. What? You don't? But deleting a non existing, outdated variable that is the only thing stopping the script from working is probably not the best idea so I'll just wait for the script maker to remove it himself because I have no ability to think for myself right?
I've fixed about four of my scripts using SPS simply by deleting that line–maybe I'm wrong but SPS_Continue seems to have been removed in SPS 2.0 ( again: I could definitely be wrong, but maybe before criticizing take a look around;)). Maybe it's not the "best idea" (because what then in your enlightened point of view is the best idea? I don't see you trying to help.) but If he wants to get that script working quickly and not wait for the script writer to hold his hand he can simply delete that line and get back to business. If it still doesn't work what does it matter? He'd just be the same position he was in before–but at least he would have tried.
Sorry if that sounded a bit rude. I don't mean to be.
To the thread maker: if removing that line doesn't fix your problem, try downgrading your SPS. Based on your lack of response for a couple of days I have a feeling you solved your problem or moved on.