What other pre-uop files do people need access to, if any? C# or .net would be better suited for a general purpose converter than oeuo (can't read registry or read/write files outside oeuo directory, no zlib) if people need things besides map access (art files or whatever). TM have you considered open sourcing your deconvolver? Worst case I suppose someone could go in and modify UO Fiddler to export converted files.
