Ok, so I have downloaded some custom scenery and put them all in the Style/Themed File but when I click on the icon for them in the scenery menu it will just freeze so I push Alt on my keyboard to see whats wrong and there is a pop up that says "no :svd for :sid".

Does anyone know how to fix this?

Just as a follow-up, for anyone getting that "No SVD: for SID:" error message when trying to use my custom building set - double-check to make sure you're unzipping the files in the right place.

For example, if you accidently unzip it in...
"C:\Program Files\Atari\RollerCoaster Tycoon® 3\Style\"
...instead of...
"C:\Program Files\Atari\RollerCoaster Tycoon® 3\Style\Themed\"
...then the files & folders will end up in the wrong place you'll get that error message.

If you're not sure if the files are in the right place, take a look at the listing on the first page.

Thanks for popping in to explain this Marnetmar.
Mike, even if you're not getting the "No SVD: for SID:" error message, freezes like the one you described are usually the result of files being installed in the wrong place.

When RCT3 starts up it scans most (or all?) of its folders, looking for objects to display in the various scenery menus. At this point, it doesn't really care what folder it finds them in, it's just collecting object names and their scenery types. So even if you put the custom objects in the wrong folder, RCT3 may pick them up to be shown in the scenery menus. However, when you try to select one of them, RCT3 looks deeper into the object's info to find other files it needs, and these files are specified with a full path name within the RCT3 installation folder. So at that point, if the file RCT3 is looking for isn't in the right place, it chokes & dies.

The upshot of all this is that you have to be careful to install the custom objects in the right place, and that your unzipping program correctly re-creates the subfolders needed.

Hope this helps

This is what is in my folder yet it still does it

i'm having identical problem!!!!....its definately in the correct file, and it comes up with the same error message it appears on the scenery list and all looks so good....but when i open it, just freezes can someone help me please....annoying me