need source of angstrom -

i have a setup directory created on ubuntu from this link

now i wanted source code …as suggested by this link

i did this
mohit@mohit-desktop:~/Git/angstrom-setup-scripts$ MACHINE=beagleboard ./ bitbake virtual/kernel
Updating bitbake
Executing: cd /home/mohit/Git/angstrom-setup-scripts/sources/bitbake && git pull --rebase
Current branch 1.10 is up to date.
Updating OpenEmbedded
Executing: git pull --rebase
Current branch is up to date.
Using ~/.oe/environment to setup needed variables. It is recommended to do ‘. ~/.oe/environment’ and run ‘bitbake something’ without using ./ as wrapper
Executing: MACHINE=beagleboard bitbake virtual/kernel
Traceback (most recent call last):
File “/home/mohit/Git/angstrom-setup-scripts/sources/bitbake/bin/bitbake”, line 196, in
ret = main()
File “/home/mohit/Git/angstrom-setup-scripts/sources/bitbake/bin/bitbake”, line 160, in main
cooker = bb.cooker.BBCooker(configuration, server)
File “/home/mohit/Git/angstrom-setup-scripts/sources/bitbake/lib/bb/”, line 90, in init
File “/home/mohit/Git/angstrom-setup-scripts/sources/bitbake/lib/bb/”, line 584, in parseConfigurationFiles
File “/home/mohit/Git/angstrom-setup-scripts/sources/bitbake/lib/bb/fetch/”, line 196, in fetcher_init
File “/home/mohit/Git/angstrom-setup-scripts/sources/bitbake/lib/bb/”, line 70, in delDomain
self.connection.execute(“DROP TABLE IF EXISTS %s;” % domain)
sqlite3.OperationalError: attempt to write a readonly database

but it gives this error !!

i have updates sqlite as suggested by google …still same error !!
what can be the problem …pl suggest