Hi All, I've downloaded the Physically Accurate Lighting in Mental Ray tutorial and because I'm using Maya 2012 I've loaded the compatible version that was included with the download rather than the ones specifically for Maya 2013.

However, it still brings up an error message and tells me to consult the script editor for details.

This is what is in the script editor:

file -f -options "v=0" -typ "mayaAscii" -o "D:/SimplyMayaTutorials/Physically Accurate Lighting in Mental Ray/int_lighting_vol_one/scenes/Ty_House_for_Lighting.ma";addRecentFile("D:/SimplyMayaTutorials/Physically Accurate Lighting in Mental Ray/int_lighting_vol_one/scenes/Ty_House_for_Lighting.ma", "mayaAscii");
// Warning: file: D:/SimplyMayaTutorials/Physically Accurate Lighting in Mental Ray/int_lighting_vol_one/scenes/Ty_House_for_Lighting.ma line 266232: Unrecognized node type 'misss_fast_shader2_x'; preserving node information during this session. //
// Warning: file: D:/SimplyMayaTutorials/Physically Accurate Lighting in Mental Ray/int_lighting_vol_one/scenes/Ty_House_for_Lighting.ma line 266244: Unrecognized node type 'misss_fast_shader2_x'; preserving node information during this session. //
// Warning: file: D:/SimplyMayaTutorials/Physically Accurate Lighting in Mental Ray/int_lighting_vol_one/scenes/Ty_House_for_Lighting.ma line 266257: Unrecognized node type 'misss_fast_shader2_x'; preserving node information during this session. //
// Warning: file: D:/SimplyMayaTutorials/Physically Accurate Lighting in Mental Ray/int_lighting_vol_one/scenes/Ty_House_for_Lighting.ma line 266378: Unrecognized node type 'misss_fast_shader2_x'; preserving node information during this session. //
// File read in 0 seconds.
// Error: Invalid flag '-objectFilterShowInHUD' //
// Warning: Errors have occurred while reading this scene that may result in data loss.
Please check the Script Editor for details. //

Is this going to cause me problems later on, or can I just save my file and ignore it.

Thanks, the Yeti.