Comment 13 for bug 1176701

I am also having this problem!

When I try to run do-release-upgrade (from 12.10 to 13.04), the following message occurred.

$ sudo do-release-upgrade
[sudo] password for admin:
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [198 B]
Get:2 Upgrade tool [1,206 kB]
Fetched 1,206 kB in 0s (0 B/s)
authenticate 'raring.tar.gz' against 'raring.tar.gz.gpg'
extracting 'raring.tar.gz'
Can not run the upgrade
The error message is 'No such file or directory'.

Someone said it is about the /tmp is not mount as exec but I have mounted it to be

$ mount
/dev/vda1 on / type ext4 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
none on /run/user type tmpfs (rw,noexec,nosuid,nodev,size=104857600,mode=0755)
tmpfs on /tmp type tmpfs (rw)

$ uname -a
Linux ldap 3.5.0-30-generic #51-Ubuntu SMP Tue May 14 18:47:48 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux

Anyone has an idea on this?