I had reset an older file to test the RESET process.

As it turns out it is a much much older file (ps_mo076b_ChargerPose). I just tried to install and, like those above, it does not work.

The fact the problem shows up with new purchases, purchases sitting in downloads a while, and resets leads me to believe that the process of 'preparing a file for download' through moving it to a different server and/or caching is messed up for these files. Perhaps a header byte is mangled.

(I actually ran into this before, long ago, on a can-you-believe C64 talking with a quantum server.)