Cannot Create Enough Trains Error?!?

I have this GREAT park with a problem. I created a Trench coaster and when I try to test it, I get the error, "Cannot creat enough vehicles". After deleting all the other rides and coaster in the park I still get the error. Anyone know what's up?

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Medusa rears it's ugly head. A monster coaster unlike the world has ever seen. Your strapped to a flying chair, 14 stories in the air! Just don't look down, you can turn to stone! Only at Six Flags Great Adventure! Buy one season ticket admission get one

I don't know for sure, but I think you have too many sprites on the map. Close the park for a few days to get rid of 100 or 200 peeps, then open the park and coaster. It will probably work.

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Thanks TrBiggar, that fixed it.

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Medusa rears it's ugly head. A monster coaster unlike the world has ever seen. Your strapped to a flying chair, 14 stories in the air! Just don't look down, you can turn to stone! Only at Six Flags Great Adventure! Buy one season ticket admission get one