The other possibility is that the files weren't "merged". This is somewhat dependent on the FTP application (by not merging, it effectively encourages data loss). If this is the case, then the data and internal_data directories may be missing entirely (along with library/config.php), which is potentially a major problem. If that's really what happened, you may need to restore a backup set of files before redoing the upload ("merging" with the existing files).
hmm ok not the problem since this is on my dev box will restore cpanel backup and investigate. Is there a way to verify i have the upgrade package and not the full install inspite of it ending with _upgrade? I've done a lot of these upgrades, never came across this yet. Thanks
ok, tried running the upgrade again and it's still attempting to do a full install. According to this:
3. I am trying to upgrade but it is attempting to do a new installation, how do I proceed without overwriting the existing data?
It's possible you have uploaded the files from the full package, rather than the upgrade package. Or you have uploaded the correct files but to the wrong location. Check that your data and internal_data directories have not been overwritten. If they have, you will need to restore the files from a backup. To continue with the upgrade, you will need to ensure the correct details are in library/config.php and replace the internal_data/install-lock.php file.