This was an older bug I had thought to be fixed - the solution is in the FAQ.

Q. I get Error message: 'Unhandled exception EConvertError Exception message:''173446 or 10:04:22 p '' is not a valid time call stack' or similar?

A. You will need to change your regional settings in Windows for the display of time.
Go to Start > Control Panel > Regional Settings > General > 'Time' Tab. (in wXP click on the 'customize' button)
Make sure the AM and PM symbols are set to AM / PM and NOT a.m./p.m or anything other then AM/PM. If you already have the regional setting to English / U.S. this is likely not needed.