Anybody know a good free sync program?
 

That's strange, it's always worked fine for me - maybe it's running with the wrong permissions on the remote computer? Try running it as admin if you haven't already done so. Are they both running the same OS? I've had it work fine with one computer running Win7 and one running WinXP, but if one is running Linux or something then things might go awry.

The only other utility I've tried is allwaysync, but it screwed up the file names during synchronization.

goatse

image search it first
so you get an idea of the GUI