So many crashes - Mac 10.7.5 2.8 GHz Quad-Core Intel Xeon

Latest crash during Audio Mixdown, Stereo, Mp3:

Process: Nuendo 6 [6815]
Path: /Applications/Nuendo 6.app/Contents/MacOS/Nuendo 6
Identifier: com.steinberg.nuendo
Version: 6.0.6.2230 (6.0.6.2230)
Code Type: X86-64 (Native)
Parent Process: launchd [167]

Date/Time: 2013-10-14 14:08:07.376 -0400
OS Version: Mac OS X 10.7.5 (11G63)
Report Version: 9

Interval Since Last Report: 68631 sec
Crashes Since Last Report: 1
Per-App Interval Since Last Report: 63553 sec
Anonymous UUID: 209DD264-AACB-46D3-A3AE-48C4C6FA6663

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

Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000010