parted 1.6.19: Assertion(ptr->rec_len > 0) at ext2_inode_relocator.c:149 in function doblock() failed.

[Pongo]

I was attempting to resize /dev/hdc6 from 13 GB to 12 GB (it has 8.5 GB 
used and 4.5 GB free).

qtparted gave me errors in the GUI, and, at the console, "Error: 
Filesystem was not cleaning unmounted!". I ran e2fsck -f /dev/hdc6. Then 
I received an error stating that I should send a message to you with the 
error:
"parted 1.6.19: Assertion(ptr->rec_len > 0) at 
ext2_inode_relocator.c:149 in function doblock() failed."


All the output follows.

Pass 2: Checking directory structure
Directory inode 1172873, block 0, offset 0: directory corrupted
Salvage<y>?

/dev/hdc6: 251346/1658112 files (3.5% non-contiguous), 2121208/3313398 
blocks
1010 address@hidden mnt#
1010 address@hidden mnt#
1010 address@hidden mnt# qtparted
Error: Filesystem was not cleanly unmounted!  You should e2fsck.  
Modifying an u        
nclean filesystem could cause severe corruption.
Error: Filesystem was not cleanly unmounted!  You should e2fsck.  
Modifying an u        
nclean filesystem could cause severe corruption.
Error: Filesystem was not cleanly unmounted!  You should e2fsck.  
Modifying an u        
nclean filesystem could cause severe corruption.
Error: Filesystem was not cleanly unmounted!  You should e2fsck.  
Modifying an u        
nclean filesystem could cause severe corruption.
A bug has been detected in GNU parted.  Please email a bug report to 
bug-parted@        
gnu.org containing the version (1.6.19) and the following 
message:Assertion (ptr        
->rec_len > 0) at ext2_inode_relocator.c:149 in function doblock() failed.
Error: Filesystem was not cleanly unmounted!  You should e2fsck.  
Modifying an u        
nclean filesystem could cause severe corruption.
Error: Filesystem was not cleanly unmounted!  You should e2fsck.  
Modifying an u        
nclean filesystem could cause severe corruption.
1011 address@hidden mnt#