code crash

[Allen_Ingling]

hello,

i am presenting a succession of gif images and Matlab crashes (freezes) after 144
iterations (+-1). Also the presentation time (set to 500 ms) is not respected, some images
being presented longer and vith variable times.Here's the code:

***********************************************************************************
maximg=204;

for(ii=1:4*maximg)
if mod(ii,204)==0
fprintf('\nPAUSE....PAUSE....PAUSE\n');
temppic = imread('abstractgaze/fixation.jpg');
stimtext=Screen('MakeTexture', window,temppic);
Screen('DrawTexture', window, stimtext);
Screen(window,'Flip');
ExpControl('waitspace');
end
if mod(ii,2) == 0
temppic = imread('abstractgaze/fixation3.jpg');
gaga=0.5;
else
if mod(ii,4)==1
temppic = imread(strcat('abstractgaze/', char(stim1((ii+3)/4)) ,'.jpg'));
gaga=0.6+rand/2;
tria=(ii+3)/4
img=strcat('abstractgaze/', char(stim1((ii+3)/4)) ,'.jpg')
else
if mod(ii,4)==3
temppic = imread(strcat('abstractgaze/', char(stim2((ii+1)/4)) ,'.jpg'));
gaga=0.6+rand/2;
img=strcat('abstractgaze/', char(stim2((ii+1)/4)) ,'.jpg')
end
end
end

stimtext=Screen('MakeTexture', window,temppic);
priorityLevel=MaxPriority(window);
Screen('DrawTexture', window, stimtext);
[aa bb cc dd ee]=Screen(window,'Flip',aa+gaga);