InstaDMG 443 With build 11A511s(Lion USB Stick)

I am trying to create a DMG of a new Lion install USB and I am getting the following errors:

Finding the Installer disc for LionExtras
	Found Installer Disc:	/Users/steve.brito/Documents/InstaDMG/InstallerFiles/InstallerDiscs/MacOS X Client 10.7 11A511s.dmg

Setting up for LionExtras
	Setting up InstaDMG folders

Running InstaDMG: /Users/steve.brito/Documents/InstaDMG/instadmg.bash -f -I /Users/steve.brito/Documents/InstaDMG/InstallerFiles/InstallerDiscs/MacOS X Client 10.7 11A511s.dmg -n Macintosh HD -m 10.7 Vanilla.dmg -K /private/tmp/idmg_temp.fjsKsI/items-WiUp7s -o /Users/steve.brito/Documents/InstaDMG/OutputFiles

14:24:59 ###### InstaDMG build initiated ######
	InstaDMG version 1.6rc1 (svn revision: 425)
	Host OS: Mac OS X 10.7.3
	Host Hardware: MacBookPro8,2
	Output file name: 10.7 Vanilla.dmg
	Output disk name: Macintosh HD
14:25:00 ###### Finding main MacOS X installer disk ######
14:25:00 ###### Looking for a Cached Image ######
	Mounting the shadow file (/private/tmp/idmg.uho3/0009B0E3-35A6-42E9-A8BD-7DD793659FE5.shadowfile) onto the cached image (./Caches/BaseImageCache/84517356.dmg)
2012-03-27 14:25:03.324 defaults[43903:707] 
The domain/default pair of (/private/tmp/idmg.uho3/idmg_mp.fH9E/System/Library/CoreServices/SystemVersion, ProductVersion) does not exist
2012-03-27 14:25:03.341 defaults[43905:707] 
The domain/default pair of (/private/tmp/idmg.uho3/idmg_mp.fH9E/System/Library/CoreServices/SystemVersion, ProductVersion) does not exist
2012-03-27 14:25:03.351 defaults[43907:707] 
The domain/default pair of (/private/tmp/idmg.uho3/idmg_mp.fH9E/System/Library/CoreServices/SystemVersion, ProductBuildVersion) does not exist
2012-03-27 14:25:03.360 defaults[43908:707] 
The domain/default pair of (/private/tmp/idmg.uho3/idmg_mp.fH9E/System/Library/CoreServices/SystemVersion, ProductName) does not exist
/Users/steve.brito/Documents/InstaDMG/instadmg.bash: line 665: [: 7: unary operator expected
	Target OS:   ()
WARNING: Chroot jails only work with 10.5, so disabling that functionality
WARNING: Installer daemon-jailing does not currently work with 10.7, disabling that functionality as well

has anyone tried to use the Lion Install USB? The build number is different than the InstallESD. I’ve added 11A511s to my catalog file which fixed some issues but I am stuck at this point. When InstaDMG is done doing its thing, the image is only about 1.6gb(because of updates) and does not work.

Thanks!