Flashing "Format Into String" sub-VI when trying to run a program?

[AdamS]

I'm still new to Labview and have a basic question... When I am trying to run a program, I sometimes run into a condition where there is no broken VI errors (I am able to start the program), but as soon as I hit run, my block diagram pops up and one of the sub-VI's flashes and doesn't work (most recently it was a format string VI... it began flashing and did not pass data out to the next function). What does this generally mean? Thanks in advance for the help to a newbie.

[Dennis_Knutson]

You've got a breakpoint set on the subVI. Right click on the subVI and select Clear Breakpoint. To find all breakpoints that you've set, from the Edit menu select Find and then click the Select Objects. You then pick Others>Breakpoints.