Hello
I got this error trying to update my omv.
Code
Fel #4000: exception 'OMVException' with message 'Failed to execute command 'export LANG=C; apt-get update 2>&1': Ign file: Release.gpg Ign file:/var/cache/openmediavault/archives/ Translation-en Ign file: Release Ign http://shell.ninthgate.se squeeze Release.gpg Ign http://shell.ninthgate.se/debian/ squeeze/main Translation-en Get:1 http://shell.ninthgate.se squeeze Release.gpg [490 B] Ign http://shell.ninthgate.se/packages/debian/ squeeze/main Translation-en Hit http://ftp.sunet.se squeeze Release.gpg Ign http://shell.ninthgate.se squeeze Release Ign http://ftp.sunet.se/pub/Linux/distributions/debian/ squeeze/main Translation-en Hit http://ftp.sunet.se squeeze-updates Release.gpg Hit http://ftp.sunet.se squeeze Release Hit http://security.debian.org squeeze/updates Release.gpg Ign http://security.debian.org/ squeeze/updates/main Translation-en Ign http://security.debian.org/ squeeze/updates/non-free Translation-en Hit http://packages.openmediavault.org sardaukar Release.gpg Ign http://packages.openmediavault.org/public/ sardaukar/main Translation-en Get:2 http://shell.ninthgate.se squeeze Release [2250 B] Hit http://ftp.sunet.se squeeze-updates Release Err http://shell.ninthgate.se squeeze/main amd64 Packages 404 Not Found Hit http://packages.openmediavault.org sardaukar Release Hit http://security.debian.org squeeze/updates Release Ign http://shell.ninthgate.se squeeze Release Hit http://ftp.sunet.se squeeze/main Sources Ign http://shell.ninthgate.se squeeze/main amd64 Packages/DiffIndex Hit http://shell.ninthgate.se squeeze/main amd64 Packages Hit http://ftp.sunet.se squeeze/main amd64 Packages Hit http://ftp.sunet.se squeeze-updates/main Sources/DiffIndex Hit http://ftp.sunet.se squeeze-updates/non-free Sources Hit http://packages.openmediavault.org sardaukar/main amd64 Packages Hit http://security.debian.org squeeze/updates/main Sources Hit http://security.debian.org squeeze/updates/non-free Sources Hit http://security.debian.org squeeze/updates/main amd64 Packages Hit http://security.debian.org squeeze/updates/non-free amd64 Packages Fetched 491 B in 0s (746 B/s) W: GPG error: http://shell.ninthgate.se squeeze Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY E639BFCB72740199 W: Failed to fetch http://shell.ninthgate.se/debian/dists/squeeze/main/binary-amd64/Packages.gz 404 Not Found E: Some index files failed to download, they have been ignored, or old ones used instead.' in /usr/share/openmediavault/engined/rpc/apt.inc:331 Stack trace: #0 [internal function]: OMVRpcServiceApt->update(NULL, Array)
please help, I'm really new at this