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I tried to install nitro and it came up with an error saying "The selected file may not be a GPG key file or it might be corrupt."


Failed to download and install the key 0x33E0E91BDD8E7F4B53837F09E131728675254D99      from hkp://keyserver.ubuntu.com:80/:

gpg: keyring `/tmp/tmpEnX4Ln/secring.gpg' created
gpg: keyring `/tmp/tmpEnX4Ln/pubring.gpg' created
gpg: requesting key 75254D99 from hkp server keyserver.ubuntu.com
gpgkeys: key 33E0E91BDD8E7F4B53837F09E131728675254D99 not found on keyserver
gpg: no valid OpenPGP data found.
gpg: Total number processed: 0
Traceback (most recent call last):
File "/usr/share/aptdaemon/aptd-import-from-keyserver", line 98, in <module>
add_key_from_keyserver(keyid, keyserver)
File "/usr/share/aptdaemon/aptd-import-from-keyserver", line 23, in add_key_from_keyserver
_add_key_from_keyserver(keyid, keyserver, tmp_keyring_dir)
File "/usr/share/aptdaemon/aptd-import-from-keyserver", line 51, in _add_key_from_keyserver
keyserver, keyid))
__main__.AptKeyError: recv from 'hkp://keyserver.ubuntu.com:80/' failed for  '0x33E0E91BDD8E7F4B53837F09E131728675254D99'

What to do to this? What do GPG key file mean? Nitro has an option to but for $0.00 instead of normal "install" button. I signed in with my Ubuntu One account and then proceeded. Is this related to the errors?

I tried to insatll nitro from software center in Ubuntu 12.04. This is the first time i'm seeing this error. I could install other softwares without any problem. Nitro was added to the list of sources in software center.

share|improve this question
How exactly are you installing Nitro? This key never existed on any public OpenPGP keyserver. Did you try to install from the Software Centre? Did you build it from source? Etc. Please edit your question to include all steps prior to this error. –  gertvdijk Aug 20 '13 at 12:31
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