Error 10180 is listed in the B-Tree Filer Error Codes as: ‘Attempt to repair the FileBlock failed; reconstruction is unavoidable.’ If this error occurs on a local hard drive: 1. Delete all *.DIA files. 2. Check that the DOS environment parameters are set to: RPRONET=NO NET RPROWS=0 If this error occurs on a network hard drive: 1. Check that the DOS environment parameters are set to: RPRONET=NOVELL or appropriate network type RPROWS=1 the number must be unique to each work station and go in sequencial order starting with 1. 2. Delete the *.DIA files, they may have been corrupted.