Hi all,
I found what causes the "undefined" error in the statements and trigger logs. I didn't want to delete all my logs so I made it my mission to find out what caused it even though I have thousands of logs!
It was a football team with an ampersand in its name. I had a folder called "111224926.Vicem Hai Phong U21 v Ha Noi T
&_T U21 _ Match Odds" in "C:/Users/My Username/MarketFeeder Pro 7/profiles/My Trigger/logs/triggers/2013-09-28". Simply rename this folder to "111224926.Vicem Hai Phong U21 v Ha Noi T_T U21 _ Match Odds" (remove the ampersand) and it works!
I guess the error occurs because the JavaScript used to generate the statements sees this HTML ampersand as the end of a variable and then corrupts the rest of the script.
Hope this may help someone else in the future.
Whitey