Problem:  Starry Night crashes on OSX after registering the program.  Crash report shows the following (note where it says 3ivx):

Crashed Thread: 0 Dispatch queue: com.apple.main-thread

Exception Type: EXC_BAD_ACCESS (SIGBUS) 
Exception Codes: KERN_PROTECTION_FAILURE at 0x00000000086f7140

VM Regions Near 0x86f7140: 
__TEXT 000000000861f000-00000000086f0000 [ 836K] r-x/rwx SM=COW /Library/Application Support/3ivx/*.dylib 
--> __DATA 00000000086f0000-000000000872b000 [ 236K] rw-/rwx SM=COW /Library/Application Support/3ivx/*.dylib 
__DATA 000000000872b000-000000000874b000 [ 128K] rw-/rwx SM=PRV /Library/Application Support/3ivx/*.dylib

Solution:  Download a new version of 3ivx here: http://www.3ivx.com/download/macos.html and set it as the preferred Mpeg-4 encoder. After that Starry Night will run fine.