Well that's not good when you're stumped on step 1!
That's not a common error, actually, and not sure immediately why it wouldn't install. It certainly looks like you're on a Linux server (Windows ones sometimes give that issue)... Can you let me know the following:
1) I'm assuming other extensions install just fine, correct?
2) If you go to Site -> System Information, and then the Directory Permissions tab, make sure the /tmp directory is marked green and writeable
3) If that doesn't work, can you try FTP'ing the com_jfbconnect file to the /tmp directory of your Joomla site, and then in the installer, use that path to install (instead of using the Upload File installer) of Joomla.
Hopefully, one of those helps track down the issue. If not, we'll gladly help give more suggestions or (eventually, if ok) ask for access to the admin area to investigate further.
Thanks,
Alex