i Just checked with XP and it worked theer. So it indeed might be a Vista-problem.
Though, I have to admit that I used the original japanese version of XC3 for my test, but I doubt very much that in the english version, a blocker for “printscreen” has been added.
However, I know for a fact that the engine for the F&C-games Canvas and Majokko a’la Mode has such a blocker, though.
CWP is not a standard-graphics-foramt that you could expect to be suported by any standard graphics-processing program, but a proprietary format for CGs in CROWD games.
But if you are using Photoshop - doesn’t it have a “Snapshot”-function like Paintshop Pro? Or did you try it already and it didn’t work either?
In that case, we are constantly approaching the point that you will have to revert to XP and take the screenshots there…