The 5.5.2 update is essential for users requiring the multi-core optimizations and 64-bit bridge improvements introduced in the 5.5 cycle. It effectively patches the "bleeding edge" crashes of the initial 5.5 release, though users heavily reliant on older MIDI volume automation should verify their project settings after installation. Steinberg Forums manually restore missing Roomworks presets after installing this update? Cubase and Cubase Studio 5.5.2 released - Steinberg Forums
: Improved responsiveness when navigating complex projects. Team Air Cubase 5 5 2 Update