Huh. So, intriguingly, after installing wsh56, it loaded! Hooray! However, it then would not open data files - csvs, excel files, etc. Odd. So, I tried installing msxml3 and msxml6. Now AMOS no longer starts, and instead I get: err:ole:ClientIdentity_QueryMultipleInterfaces IRemUnknown_RemQueryInterface failed with error 0x80004002 err:ole:ClientIdentity_QueryMultipleInterfaces IRemUnknown_RemQueryInterface failed with error 0x80004002