i had similar problems about the time Ancelad started the theme. Not installing at all. Not in console, not devel, not aegis hack, not from web,.warehouse, etc. The hack thing worked only once but then stopped working. I asked Ancelad and he kindly gave me the extracted theme files to copy to /usr/share/themes... This one worked but was not very easy to do eveytime and technically was not an installation )
And then my phone died. I mean it got into a reboot loop because of something i did. After flashing the phone (the first time) itlnstallation worked directly from Warehouse. Maybe the problem was the original firmware on the phone. You should.try this if no other solution comes to help. No pain, no gain
hope my story helps...