NEXUS 7 TOOLKIT AUTO UPDATE V4.2.0 [19TH DEC 2012] AVAILABLE!!
+Updated CWM Touch Recovery to 188.8.131.52
+Fixed NAND Backup Restore option being pushed to wrong folder so cwm can now find the folder
For people who do not want or cannot get the Auto Update versions you can download cwm touch 184.108.40.206 from http://download2.clockworkmod.com/recoveries/recovery-clockwork-touch-220.127.116.11-grouper.img and flash it via the Toolkit. To fix the NAND backup being pushed to the wrong location just find the timestamped backup folder in /sdcard/ after it has been pushed back to your device and move it to /data/media/
Thread link: http://goo.gl/9NL3u