If you are a Mac or Linux user please make a copy of your Skyscraper folder. Remove all 3rd party buildings and data. Zip it up and upload it to a website and post a link here. Don't worry about uploading 32-Bit builds of Skyscrapersim. Many complex buildings use over 3 GB of RAM. 64-Bit computers have been the standard for ten years now. It is very unlikely that anybody today uses a 32-Bit computer as their main machine.