I'm having a hard time figuring out what the problem is. Every support article I can find points to the User Library folder as the location of the save files. Now, User Library folder IS hidden on Mavricks, so it may not show up in searches. I know it won't show up in spotlight search, and command-line search methods (even logged in as root) may not see it without some switch set.
There are only two methods I know of to make sure you are seeing things in that directory structure:
1) Use the "Go To" feature in Finder (it's at the bottom of the "Go" menu), and type in the path : \Users\<User Name>\Library\Caches\
2) use the command string I gave you earlier to unhide folders. Then you can easily look for it in Finder without worrying about hidden folders.
It has to be there. I can't imagine that Cyan would have a special version just for you that put it somewhere else.
As for Cyan Support, please understand that Cyan is a very small company, and like many of those, it's very likely they don't have dedicated support staff. It just costs too much. Plus, they are in full Obduction mode at the moment, so free time to answer support can be hard.
You can also try PMing some of the staff here on the forum. You might get a faster response that way.