Not sure if it helps but I am also getting this error, I will update as I attempt to troubleshoot.
ROM: G_Harmony_ICSv1.5(120)(SuperCharged) (4.0.4)
CWM: 2.5.1.1-bekit-0.8
I got both errors but the second was solved by unplugging my computers USB cable from the g-tab.
(I can not access CWM...it locks up after stating "booting recovery kernel image") SOLVED
Steps:
1. From the settings picked factory reset loose all data and SD card data.
2. Reboot to recovery (CWM).
3. Formatted the internal SD card and ExSD card using CWM.
4. Mounted SD card on computer using USB cable connected to the G-Tab.
5. Let windows format the SD card. (Was this bad?)
6. Loaded ROM.zip file over to SD card from computer.
7. wipe data/factory reset.
8. wipe cache partition.
9. install zip from SD card -> coose zip from sdcard -> G_Harmony_ICSv1.5(120)(SuperCharged).zip
10. Install.
11. Reboot.
12. Error screen "Encryption unsuccessful Encryption was interrupted and can't complete. As a result the data on your tablet is no longer accessible...." "Press this button to do a factory reset"
13. Press the button to the same results.
UPDATE 1:
When I did a rewipe i found that when i did the data wipe is said:
-- Wiping data...
Formatting DATA...
E:Can't mount /dev/block/mmcblk3p2
(No such file or directory)
Error mounting /data/!
Skipping format...
Formatting CACHE:...
Formatting SDEXT:...
No app2sd partition found. Skipping format of /sd-ext.
Formatting SDCARD:/android_secure...
Data wipe complete.
Could it be that when I used my computer to format the SD card I did it wrong?
UPDATE 2:
I was browsing around the CWM options and I found:
advanced -> Partition SD Card
So I did that and then a data wipe again, and this time it said:
-- Wiping data...
Formatting DATA...
<<NOTE THE LACK OF ERRORS>>
Formatting CACHE:...
Formatting SDEXT:...
No app2sd partition found. Skipping format of /sd-ext.
Formatting SDCARD:/android_secure...
Data wipe complete.
I am hoping things should work now, I picked 2GB with a 0MB swap.
UPDATE 3:
Ok... should have figured that deleted my SD card files including my ROM "G_Harmony_ICSv1.5(120)(SuperCharged).zip" so I mounted it and copied it over again.
(I also did some mounting and unmounted and may have lost it there.)
UPDATE 4:
IT WORKS!! fixed, must have been because I formatted out the data partition, but CWM fixed this for me!
I hope this helps others with the same issue.