# Matlab 2007A & PTB3 Install Problems **URL:** \ **Category:** Uncategorized\ **Created:** [July 10, 2007, 6:28pm UTC](https://psychtoolbox.discourse.group/t/matlab-2007a-ptb3-install-problems/1857 "2007-07-10T18:28:13Z")\ **Posts on this page:** 1\ **Page:** 1
**Author:** ![Allen\_Ingling](https://avatars.discourse-cdn.com/v4/letter/a/a183cd/32.png) [@Allen\_Ingling](https://psychtoolbox.discourse.group/u/Allen_Ingling)\ **Post date:** [July 10, 2007, 6:28pm UTC](https://psychtoolbox.discourse.group/t/matlab-2007a-ptb3-install-problems/1857/1 "2007-07-10T18:28:13Z")
Hi All- I've seen this problem mentioned a few places on the Discussion Boards, but I have not found a solution yet. This is a new install of PTB for me using a site licensed version of MatLab. After the installation I get the following error if I run a demo. Right now the main problem is the lack of Screen command but it looks like there is an OpenGL problem too. I've done some things to try and remedy this already (see below) but here is the output and version information. \<---Start---\> > \>\> BasicSoundOutputDemo ??? Error using ==\> AssertOpenGL at 54 This script or function is designated to run only an Psychtoolbox based on OpenGL. See AssertOpenGL. Error in ==\> BasicSoundOutputDemo at 45 AssertOpenGL; > \>\> DriftDemo ??? Error using ==\> Screen Too many input arguments. Error in ==\> DriftDemo at 108 Screen('CloseAll'); \<---End---\> I saw a thread discussing the need to install the Microsoft Visual C++ libraries. I was able to install the X86 but not the X64 libraries. I am running a new HP Windows XP laptop. Any help would be greatly appreciated. Brian Version Information ------------------ ------------------------------------------------------------------------------------- MATLAB Version 7.4.0.287 (R2007a) MATLAB License Number: 221691 Operating System: Microsoft Windows XP Version 5.1 (Build 2600: Service Pack 2) Java VM Version: Java 1.5.0\_07 with Sun Microsystems Inc. Java HotSpot(TM) Client VM mixed mode ------------------------------------------------------------------------------------- MATLAB Version 7.4 (R2007a) EyelinkToolbox Version 1.4.4 iViewXToolbox Version 0.1 MATLAB Compiler Version 4.6 (R2007a) Partial Differential Equation Toolbox Version 1.0.10 (R2007a) Psychtoolbox Version 3.0.8 9 October