Ok, this may be a case of the blind leading the blind, as I'm no way an Android expert.
But I suspect you are having the same issue I had yesterday, when I couldnt restore...
If that is the case, suggest you....
1. Boot the tab into CWM
2. From the main menu in CWM, select "mounts and storage"
3. From that menu select "mount /sd-ext"m, as the external SD card would have been unmounted when you removed it to copy files.
4. After this has been mounted, go back to the main menu, and "install zip from sdcard" - if that is what you wanted to do.
5. After this has done its thing, select "reboot system now"
Hopefully it will then reboot ... Does take a while to boot past the Android screen when you have rebuilt, on the first boot only. Apparantly the system files are configuring for the first boot. Should be quicker after that...
Hope this helps...