Materialize Free Texture and Map Generation For Sketchup

Hi I want to beable to make custom textures and there maps using Materialize.

I followed the how to videos on uploading the program and once the program is installed on how to start mapping your photo of a texture. Unfortunately the photo of the texture I want to map is not showing up in Materialize.

Not sure what else to do. Sent an email to Bounding Box Software who produces the Materialize program without a response. Also does anyone used Photoshop to create texture maps. Be interesting to hear a comparison between Materialize and Photoshop.

I have uploaded a few screen shots. I hope they are accessible.