When I'm coding up my study, what should I do when I get an error message? How do I know what needs fixing?

How do I get audio and other stimuli (e.g., video, image, or text) to appear at the same time?

How do I get two or more stimuli to appear on the same trial?

I have some trials that I want to have 'choice' responses. I would like to avoid the automatic 'please choose the response you think is most likely' above the choice buttons. Is there a way to remove this?

Dear researchers,
Hi! My name is Hyeonah, a second-year PhD at the University of Arizona.
I'm interested in conducting a self-paced reading study in Findingfive with a comparatively long story (about 2200words).
For those researchers who have already conducted a self-paced reading study in Findingfive, I'd appreciate it if you could give me any comments or suggestions (e.g., any technical issues that you have noticed in conducting a self-paced reading in Findingfive, to what extent the text should be divided). 
Thanks!