When playing puzzle 529, if you delete the amino acid 418 (proline) while in Design mode, the game crashes. Perhaps the last amino acid in the backbone?

The amino acid number and type given is specific to the start of the puzzle (or after reset), since obviously the number can change if other aas are added or removed.

I am using the game in Main mode, on Windows 7 (64-bit).

See log file attached.

UNHANDLED EXCEPTION
1: library_main +2456423 bytes (no line)
2: library_main +2193252 bytes (no line)
3: library_main +2167456 bytes (no line)
4: library_main +2168285 bytes (no line)
5: library_main +3140972 bytes (no line)
6: library_main +2492355 bytes (no line)
7: library_main +2495371 bytes (no line)
8: BaseThreadInitThunk +18 bytes (no line)
9: RtlInitializeExceptionChain +99 bytes (no line)
10: RtlInitializeExceptionChain +54 bytes (no line)