Recently i was facing an issue with newer clients that doesn't allow space in guild names.   With ollydbg, I figure out how to allow space and I'm sharing:   Open your hexed with a hex editor and search for this hex:   Replace for:   The 20 hex above is the space string (" ") , I changed it to "!" and If you want change to another just put the hex code in that position.   Note: Tested in 2012-05-25-RagexeRE.