X6 will not toolpath part but X5 does

[FTI2007]

So I have a solid works part file that X6 will open fine but will not create a surfacing tool for. As soon as Finish entering all the parameters it says want to change color of last processed surface? then says Error Regenerating Operation!( Surface High Speed Rough). I tried all the surface too paths and it does the same. I tried resaving the file in solidworks as XT and IGES and STEP. but no change. But I can open the same part in X5 and it works fine. Any Ideas? The part was one of 6 different parts from the same solidworks assembly file. The rest worked fine. THanks In advance

[Bryan Johnson]

If solid body, Create->Surface->from solid.

If error is found during surface creation, use option to change color, and separate and evaluate the bad surface. Many times it a a small sliver that can deleted. Now create your toolpath from the surfaces that do not include the problem face.

[FTI2007]

It is not a solid but surfaces and lines. I tried to tell it to change color when it asked but could not see the difference. Maybe I will try changing the color when it asks and then delete or move the that color surface to a different level and see what happens. I just dont understand why it would work in x5.

[FTI2007]

that worked to change the colors of last surface and then move them to a different level. I had 2 surfaces I could not see even when alone on a surface. deleted them and now it works fine.