When CFSM marks a CDLC as corrupt, it usually means that it's severely corrupt and can only be manually repaired (using RS Toolkit and Editor on Fire) The exact repair process depends on what's the problem with the particular CDLC, whether it's a problem with missing tones, corrupt arrangements or something else. (CFMS's repair log should give you a general idea about the problem, though) As for repairing songs that exceede max arrangment number (if that's what you were asking): before you start the repair process, click on "Max Five Arrangements" button in Repairs tab, select which arrangement(s) it should remove in a CDLC and start the repair process. Like for example this "- Repair failed ... There is tone name error in XML Arrangement: Lead solo is not properly defined. Use EOF to re-author custom tones or Notepad to attempt manual repair." what would you do?