The converter converts .nib files built with BuildUIsNow 1.0 beta3 to aCupOfCoffee 1.0. Please make sure you have a copy of your nib files before converting. To convert a file, drop the file convertBeta3ToFinal into a terminal window, then drop your nib file into that terminal window. You get something like /Users/John/aCupOfCoffee/converter/convertBeta3ToFinal /foo/bar.nib Press Return to execute the command. The converter copies your file to a .nib~ file in the same folder, then changes the .nib file in place. Now you can open the .nib file in IB with aCupOfCoffee.palette.