I managed to install CM10.1 Genio by Oma v1.4 on a RK3066 tablet (TP10.1-1500DC-dark grey-metal). I can boot into CM and it works pretty well. However on every boot into CWM it says:

E:Can't mount /cache/recovery/command
E:Can't mount /cache/recovery/log
E:Can't open/cache/recovery/log
E:Can't mount /cache/recovery/last_log
E:Can't open/cache/recovery/last_log

When trying to wipe cache I get:

E:format_volume: make_extf4s failed on /dev/block/mtdblock6

I have double checked the installation instructions but don't have an idea what could be wrong. I also followed some discussions saying first to do a stock recovery before flashing CWM and to install format_NAND.zip from CWM. I did so and even installed an alternative touch enabled CWM. Nothing helped, same error messages 🙁

When booting CM and entering a terminal this is what mountpoints are:

$mount

rootfs / rootfs rw 0 0
tmpfs /dev tmpfs rw,nosuid,relatime,mode=755 0 0
devpts /dev/pts devpts rw,relatime,mode=600 0 0
none /dev/cpuctl cgroup rw,relatime,cpu 0 0
proc /proc proc rw,relatime 0 0
sysfs /sys sysfs rw,relatime 0 0
/sys/kernel/debug /sys/kernel/debug debugfs rw,relatime 0 0
none /acct cgroup rw,relatime,cpuacct 0 0
tmpfs /mnt/secure tmpfs rw,relatime,mode=700 0 0
tmpfs /mnt/asec tmpfs rw,relatime,mode=755,gid=1000 0 0
tmpfs /mnt/obb tmpfs rw,relatime,mode=755,gid=1000 0 0
/dev/block/mtdblock8 /system ext4 ro,noatime,nodiratime,barrier=0,data=ordered,noauto_da_alloc,discard 0 0
/dev/block/mtdblock6 /data ext4 rw,nosuid,nodev,noatime,nodiratime,barrier=0,data=ordered,noauto_da_alloc,discard 0 0
/dev/block/mtdblock5 /cache ext4 rw,nosuid,nodev,noatime,nodiratime,barrier=0,data=ordered,noauto_da_alloc,discard 0 0
/dev/block/vold/179:1 /mnt/external_sd vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0002,dmask=0002,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
/dev/block/vold/31:9 /mnt/sdcard vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0002,dmask=0002,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
tmpfs /mnt/sdcard/.android_secure tmpfs ro,relatime,size=0k,mode=000 0 0

So CWM thinks cache partition is mtdblock6 while it is mtdblock5 in CM? Someone any idea?