By saving a macro file into the Claris folder/directory in the System folder, and naming it ClarisWorks Macros, it will automatically load when you launch ClarisWorks. If this file becomes corrupted, ClarisWorks opens it but then keeps alerting you that the file is damaged.
Similar problems could occur if you create a ClarisWorks WP Options file and it becomes corrupted. In this case, you would get a file corrupted message when creating a new WP document.