Steinberg has updated Cubase to v4.5.2.274 (all versions, including the 64 Bit Preview).

The following issues have been fixed:

• Fixed: Under certain conditions a crash may occur selecting an audio driver (Mac OS X only).
• Fixed: Frozen tracks are editable after project is reloaded.
• Fixed: Audio recordings in Wave64 format exceeding 4GB in file size results in broken files.