# PTB-ERROR\[Low-Level setup of window failed AGAIN

**URL:** <https://psychtoolbox.discourse.group/t/ptb-error-low-level-setup-of-window-failed-again/1565>\
**Category:** Uncategorized\
**Created:** [May 7, 2007, 2:58pm UTC](https://psychtoolbox.discourse.group/t/ptb-error-low-level-setup-of-window-failed-again/1565 "2007-05-07T14:58:34Z")\
**Posts on this page:** 1\
**Page:** 1

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**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:** [May 7, 2007, 2:58pm UTC](https://psychtoolbox.discourse.group/t/ptb-error-low-level-setup-of-window-failed-again/1565/1 "2007-05-07T14:58:34Z")

</div>

Dear all, i ran into the same problem as others. first time i try to  
run a script it says the following.  
  
then second time it says the errormessage below.   
(PTB-ERROR[Register Windowclass failed]:   
PTB-ERROR[Low-Level setup of window failed]...)  
  
i have ati radeon x600, downloaded newest driver, made sure, that i  
run in 32 bit and page-flip is enabled (the only one i found says  
triple buffering enabled here)  
still i get the same errormessage.  
  
could you please advice me?  
Sincerely  
Gyula  
  
  
PTB-INFO: Using GLEW version 1.3.5 for automatic detection of OpenGL  
extensions...  
  
------------------------------------------------------------------------  
 Segmentation violation detected at Mon May 07 16:54:25 2007  
------------------------------------------------------------------------  
  
Configuration:  
 MATLAB Version: 7.0.1.24704 (R14) Service Pack 1  
 MATLAB License: 262754  
 Operating System: Microsoft Windows XP  
 Window System: Version 5.1 (Build 2600: Service Pack 2)  
 Processor ID: x86 Family 15 Model 4 Stepping 7, GenuineIntel  
 Virtual Machine: Java 1.4.2\_04 with Sun Microsystems Inc. Java  
HotSpot(TM) Client VM  
 (mixed mode)  
 Default Charset: ibm-5348\_P100-1997  
  
Register State:  
 EAX = 00000000 EBX = 1eecc12c  
 ECX = 1ee97900 EDX = 1ee97900  
 ESI = 1ee97900 EDI = 00000000  
 EBP = 1ee97900 ESP = 00cdd258  
 EIP = 690ec5c8 FLG = 00210246  
  
Stack Trace:  
 [0] atioglxx.dll:0x690ec5c8(0x69329e00, 0x69329e10, 0x6932a540,  
0x6932a540)  
 [1] atioglxx.dll:0x69329df0(0xc308c483, 0xcccccccc, 0x89e85152,  
0x830015ce)  
 [2] 0x0015ce98  
  
  
----------------  
  
  
  
PTB-ERROR[Register Windowclass failed]: Unknown error, Win32 specific.  
  
  
PTB-ERROR[Low-Level setup of window failed]:The specified display may  
not support double buffering and/or stereo output. There could be  
insufficient video memory  
  
???