RCTgo

When ever I try to open up a scenery package in RCT3 the game shuts down and up pops a message saying Fta:sid No :svd for :sid. Any clue anybody? I use a mac so could that be a problem? And also I had that problem with the girders n glass update but when I got the earlier version it started working. Is the problem that i only have updates and I need the basic pack? Thanks for any help.

Note I moved this post because I put in the wrong category. Sorry.