blenderguru explosion tut problems ?

anybody ahs tried this tut from blenderguru for explosion!

got some problems ?

1 - i downloaded the finish file
but cannot load it in 2.55 708

have you seen this problem?
and how to correct that ?

2 - Ramp for material
cannot redo the ramp setup
can someone load up a mat with theses ramps
cause the tut is not really clear how many bands what color ect…

3 - when using the Voxel textures
must you bake the smoke before being able to use theses voxels texture?
cause i cannot get the colored render !

Thanks for any help