[carlos@cmarquitectura.com]

1)Error mesage open archive:

Maxwell translation Window.
Verbose translation.

Warning: Could not traslate mapping for map "(material name)". Chanel 1. Reason. Only "Explicit map channel" can be translated.

These materials run ok in 1.1 version.

2)Problem whit ior files mxm old version.

[tommyjj]

i had to re-texture most of my stuff from 1.1 when i used 1.5 or it would lock up all the time. Try removing all materials and then rendering, if that works then 1.5 isnt liking 1.1 textures. hope that helps a bit