Millisecond Forums

Hi!
Long time listener first time caller. I'm hoping you can help me. I'm running 5.0.7
I'm writing a script to record responses to a face stimulus. 
Participants see the face for 500ms, then a fixation cross for 1500ms. I want the stimuli displayed for the whole time.
For some reason the picture disappears when you respond, and if you respond once the fixation cross is up, the fixation cross disappears.
I've followed the advice posted here but to no avail https://www.millisecond.com/forums/Topic9656.aspx?Keywords=stimulus

here are the relevant elements. I've attached the entire script as well.


<trial surprise_trial_F_pos_o1>
/ ontrialbegin = [
values.currentpic_number = values.currentpic_number +1
]
/stimulustimes = [1=faces_picture_o1, reminder_F_pos; 500 = occluder,text.FixBlack_text_no_erase]
/responseinterrupt = trial
/validresponse =("f", "j")
/ correctresponse = ("f")
/trialduration = 2000
/ beginresponsetime = -1
/ontrialend = [
if (trial.surprise_trial_F_pos_o1.correct)
values.surprise_pos_rating = values.surprise_pos_rating +1;
else {
values.surprise_neg_rating = values.surprise_neg_rating +1;
values.block_surprise_neg_rating = values.block_surprise_neg_rating +1}
]
</trial>

<picture faces_picture_o1>
/items = faces_items_o1
/select = values.currentpic_number
/width = 75%
/height = 75%
/erase = false
</picture>

<text FixBlack_text_no_erase>
/ items = Fixation_item
/ fontstyle = ("arial", -150, false, false, false, false)
/erase = false
</text>

Would really appreciate any help, 
Cheers, 
Nick