I classify a bug being major if it can affect game play (making an illegal move or a losing one instead of the winning one, etc.), otherwise it is considered to be a minor problem.
| Problem | Likely / actual cause | Solution | Status |
| Lost in time. | Excessive time extension when pondering is on - uninitialized variable | Set the variable. | Fixed. |
| Problem | Likely / actual cause | Solution | Status |
| The program sometimes stops after finished solving a number of testset positions under Fritz GUI in UCI mode. | Unknown. | None. | Open. |
| Unable to read non-British style decimal numbers (ones with a comma instead of a full-stop) correctly. | KKFChessConfig saves the decimal numbers according to the locale of the machine. | Replaces the commas with full-stops before parsing. | Fixed. |