Millisecond Forums

I'm trying to add a simple open ended question at the end of the already existing Flanker Task script I downloaded online. I added this as a block (called block.donate_intro) with 1 trial composed of an "openended" question. However, sometimes when I run the script the instruction page appears, but the open ended question doesn't. It doesn't even appear on the output. Other times, however, it runs perfectly.