Not sure. The last log entry I have for Monster is from 1029 this morning, and from Vaio at 1201. Check out the result code from your scheduler and ensure that it's 0x0. Try right-clicking on the task and running. See if an entry for your machine shows in the log file (I'll Freepmail you the link). If this fails, try running the script from File Explorer and seeing if you made it into the log file.
I don't know what any of that means.. .