Please provide the log file refernce and log viewer version number you are using to encounter these problems.
Log viewer: 1.01
Log file: http://www.winbolo.net/gamelog.php?mode=logfile&key=c5bf321dca9748b578247055550961e8
To make it say corrupt log file (works 30% of the time):
Have it on tank centered at normal speed (1x)
Press play, let it play for 3 to 4 seconds
Then keep clicking the FF button (about 15 times)
The viewer will either seriously crash (memory violoation) or say corrupt log file. I've only seen the memory violoation 1 time.
If it says corrupt log file, then usually pressing Ok will close the file. Sometimes there are 2 error dialogs and pressing OK on one of them freezes the application. If the OK button worked then the file will close, but the Rewind button in the Controls dialog will still be enabled. Pressing it will crash the log viewer.
Around 2% of the time I see the game get stuck. It says it's playing but the game doesn't change state.