Additional remark to Runtime Error question

[ms]

Sorry, I forgot to mention that it is a dual-task, and participants
press a button as soon as they hear the sound and another button as
soon as they see the word. I get the Runtime Error message in the
first experimental trial, after I press the button for the sound
(first stimulus).

[ms]

Dear all,

Just to let you know, I re-run the experiment and it seems to be
working now. I guess it may have to do with the fact that I make
changes on previous files and this somehow may create problems by
deleting,changing, introducing new stuff.

Thanks for your time.