appear to be having the same crash... Mountain Lion Preview 3 --> SnowLeopard.
Found this solution when Synergy stopped working during my testing with Preview 2. Teleport was PERFECT on preview 2. Installed Preview 3 this morning, and bingo... SnowLeopard side crashes consistently. No crash on Mtn Lion side.
Removed and reinstalled on both sides several times, re-authenticated the two with encryption, etc.
Flipped the connection SnowLeopard --> Mtn Lion... works fine. I simply can't work this way because I lose all my gestures on the trackpad which I have grown so accustomed to. :-(
Crash report from SnowLeopard:
Process: teleportd 
Code Type: X86-64 (Native)
Parent Process: launchd 
Date/Time: 2012-04-23 13:52:42.185 -0400
OS Version: Mac OS X 10.6.8 (10K549)
Report Version: 6
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Application Specific Information:
*** error for object 0x11300b468: incorrect checksum for freed object - object was probably modified after being freed.