Encrypted Disk Image Won't Partition After Resize

Hi,
I have a 10 GB encrypted disk image on my macbook (type OS Extended (journaled)). I've pretty much filled up the space so I want to resize. I go into disk utility with the disk unmounted and 'Resized' it to 20GB. Then I mount it and go into the Partition tab. I drag the corner all the way down to fill up the space and hit Apply. It goes through the motions without error but it does not actually extend the partition to the resize. On the right next it then says something to the effect that the disk is read only and cannot resize the partition. The write status is read/write until I click apple....then it switches to 'Unmounted, read-only'. Any ideas on how to fix this? It's driving me crazy. I can provide screenshots when I'm home from work if necessary.
Thanks
Nick

Here are some screenshots of before and after I try to partition (after the resize):
After attempting to resize the partition it says 'The disk is not writable and can't be partitioned' and 'The disk is too small to contain partitions'. The disk write status also changed to read only. Doesn't make sense to me...anyone know how to fix this?
Thanks

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bbonn wrote:
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Well Keychain is really there for your convenience. It remembers your passwords so that you don't have to enter them when they are needed but it is sort of a security risk of you just leave your mac sitting there and your keychain unlocked. However, these passwords can only be used while the keychain is unlocked. An admin password is needed to actually view the password.
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try doing SMC reset the following article tells how to do that:
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Unable to create "Volume.dmg." (error - 60008)
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Thanks for this Thomas.
I've tried naming the image differently, but still received the error, I did however try different permutations for the password.
The error seems to happen if I use a purely numerical password string and occurs on input of the 10th numerical character, if I start with numerical character but use an alpha before the 9th number I can continue and create a password, and I can create a password if I start with an alpha and switch to numerals after the first alpha character, purely alphabetical passwords are fine too.
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Unable to create an encrypted disk image with Disk Utility

Hi:
With our upgrade to Lion a few weeks ago, we're now unable to create an encrypted disk image of any type using Disk Utility any more. This problem occurs on 3 different machines, and is reproducible whether one is using an internal HD or an external FW HD. We can successfully create nonencrypted disk images.
This is a duplicate post with all the details here: https://discussions.apple.com/message/18469359#18469359
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Save As: 01 (on Desktop)
Name: 01
Size: 100 MB
Format: Mac OS Encrypted (Journaled)
Encryption: 256-bit AES
Partitions: Single partition- Apple Partition Map
Image Format: read/write disk image
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Name: 02
Size: 100 MB
Format: Mac OS Encypted (Journaled)
Encryption: 256-bit AES
Partitions: Single partition- Apple Partition Map
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Disk Utility Version 12.1.1 (353)

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