I'm trying to upload my 1st park to the site. I keep getting told thye file type is bad or something or other. Isn't there 2 files needed to use a sandbox park, and why can't I upload both together, or if I need to zip the file how do I do that.
HELP!!!!!!!!!!!!!!!!!!!!8D

Release the first file. Then release the second file as a "patch". Or zip them with TugZip. Search for it on the web.

Regarding this park uploading : The second park file is a .dat.bak file. It is a backup file generated by RCT3 when saving the game. You don't need the backup file to open a park for the first time. You only need the original .dat file. I personnaly verified that by dowloading a few parks from users in this forum even from mysef (wanted to make sure my uploads worked. I first had the same concern). It does work very well. So all you need to do is upload your .dat file ex: MyPark.dat

Have fun !