TNG login error "Invalid floating point operation"

I cannot log into TNG as it gives me the error:
Invalid floating point operation


  1. Check the TNG log.
    If the entries stops after rate files was loaded, the database is damaged.
    You will need to re-created the database (and re-import the call details if required):
    How do I blank the TNG call details/database?

  2. Investigate if not operating system/server related:

    • TNG on Linux

      Please run the commands below and investigate the ‘trace.log’ that is created.

      • export LANG=C
      • strace -f -s 255 ./tng 2> trace.log`
    • TNG on Windows

      • Check Windows Event logs for any crash entries, etc. to see if not system related.