some issues with psychtoolbox Version 3.0.15

Hi Dear 

I downloaded the psychtoolbox Version 3.0.15 on Matlab (R2017b), Windows and when I tried to compile the below script, I get the following errors:

PTB-INFO: Multi-display setup in explicit multi-display mode detected. Using the following mapping:
PTB-INFO: Screen 0 corresponds to the full Windows desktop area. Useful for stereo presentations in stereomode=4 ...
PTB-INFO: Screen 1 corresponds to the display area of the monitor with the Windows-internal name \\.\DISPLAY1 ...
PTB-INFO: Screen 2 corresponds to the display area of the monitor with the Windows-internal name \\.\DISPLAY2 ...

PTB-INFO: Enforcing script abortion and restoring desktop by executing Screen('CloseAll') now!
PTB-INFO: Please ignore the false error message (INTERNAL PSYCHTOOLBOX ERROR) caused by this...
 

This is the scripot I try to compile: 

if ~exist('window','var')
   clear Screen; Screen('Preference', 'SkipSyncTests', 1);
   Screen('Preference','SuppressAllWarnings',true);
   window = Screen('OpenWindow',screenIndex,projValue*[1 1 1]);
   rect   = Screen('Rect',window);
   height = rect(4); width  = rect(3);
end



Thank you very much in advance 

Abdel