Looks like you've lost the default walk pose cycles from your Walk Designer directories (or perhaps lost the entire Walk Designer folder)- 'Lost' in this sense meaning that it's not where Poser expects it to be, or not called what Poser expects it to be called. Which version of Poser do you have there? I'm not completely sure about versions before 3 (I only had the demo of that until I bought 4)- someone else here probably knows more about it- but I'll give it a go: If you have Poser 3 or 4, check you've got a folder called WalkDesigner P3 in Runtime/Libraries/Pose, and that it contains a file called walk.pz2. If you have Poser 4 or 5, check that you have a folder called WalkDesigner in the same Pose directory, also with a file called walk.pz2.