Try this:
Thanks to lschroeder from another forum...
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To make ClockworkMod stick do this fix from terminal emulator.
su
(Accept Super User status if Dialog appears)
mv /system/etc/install-recovery.sh /system/etc/install-recovery.sh.bak
flash_image recovery /sdcard/recovery.img
reboot recovery
From ClockworkMod Recovery (use the default option and press menu button)
- reboot system now
Good Luck...........
Thanks for the help! I did finally get clockwork to stick on all three Coby 7015's i bought for our kids. I reformatted and redownloaded all the files - something must have been corrupted somehow. So all three units are rooted, running the newest (modified) firmware and have the gapps/market fix installed. Prolly as good as it's gonna get for a while unless someone comes out with a true 2.2 rom or Coby surprises with a 2.2 firmware update.