Hi nuhi, i have perhaps an Workaround. Am i correct, that you try to create an Catalog File from the WIM Image, like it is done in WAIK. If it is so, i experimented a little bit with WAIK, and the only Way to manipulate an Image is loading of the clg File and then start my work. Is this a possible solution for you. Instead mapping the wim, map the clg, and let WIM do the rest. Hope this helps Markus