 Same problem - upgrading 5.0.10 to 6.0.6
Just tagging this.. the same issue has happened to me, and caused administrative panel havoc as a result. I have the i486 dir as well, and it looks to have caused exactly the same issue doing this upgrade.
I've moved an i486 folder into a 5.0.10 vm to attempt to recreate and confirm that the installer is still a less intelligent than it could be.
-k |