I'm also having this problem, crashes immediately when i try to run. It's build 373 and I can't find where to download the packingslips from anymore since the launcher installation. Not sure what's going on. I can't play tho. :/The errors are turned off in this build for Windows (not sure why), so that's why it's closing without an error message.
It's really a shot in the dark without an error message but you should check if you have OpenAL installed, also make sure you have some form of audio output (headphones, speakers), and check if you have all the packingslips...
I have a report to make to you. I couldn't do anything with the current download of freeso. So, since i had nothing to lose, i deleted it all and used the version that i backed up. I'm not sure how to check what version it is, but it runs perfectly. My house is there and everything. HOWEVER, I cannot connect to any servers because the version for the servers doesn't match the one I backed up, of course. I can't get it to run at all the way the current download is. I can at least play my own house with my backed up version. I noticed that on the new version, freeso and tso are separated. In my backed up version, they are not. I'm just a layman, but I thought i should tell you what i found.Here's a RAR with them. Dunno what happened to the zip version.
https://dl.dropboxusercontent.com/u/12239448/packingslips.rar
I can't exactly re-enable error reporting right now.