Programs...

What program has a good work with Unity…
I install SketchUp 8 in my pc, I made a very nice tower,
but when I click import a new asset, and chose the file, appear
a message: “The file name is not valid.”
then when I click import package, and chose the same file,
appear this message: “Error while importing package: Couldn’t decompress package”

so, I want to know, what program has a good work with Unity 3.1?

thanks…

Apparently you can use Sketchup, search the forums and the google, there are several ways to do it.