Then probably the visualInfo has some problem. The symptom is that printOn: (inherited from NBExternalStructure) crashes while trying to show the fields. Now try niling the visualInfo visual field with code (visualInfo visual:nil) to see if it keeps crashing.<div>

<br></div><div>Also, what is the contents of NBXLibVisualInfo class&gt;&gt;#fieldsDesc ?<br><div><br></div><div>You can send me the image via yousendit (I&#39;ll may look at it if I get some free time).</div><div><br></div>

<div>Cheers.<br><br><div class="gmail_quote">On Mon, May 21, 2012 at 10:38 PM, chadwick <span dir="ltr">&lt;<a href="mailto:mathnoir@gmail.com" target="_blank">mathnoir@gmail.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">

<br><br><div class="gmail_quote"><div class="im">On Mon, May 21, 2012 at 10:04 PM, Javier Pim��s <span dir="ltr">&lt;<a href="mailto:elpochodelagente@gmail.com" target="_blank">elpochodelagente@gmail.com</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Could you put a self halt in NBGLXContextDriver&gt;&gt;createContext: and step over line by line to see which one is the offending one?<br></blockquote></div><div><br><br>ok the line is:<br>colormap := display createColormapOn: window visual: visualInfo visual alloc: AllocNone.<br>


<br>and at that point the relevant local variables:<br><br>window is 634<br>display is a NBXLibDisplay( 0x896EFD0 )<br><br>it hangs when I touch visualInfo in the debugger, then eventually the VM crashes with the following in the terminal:<br>


<br>out of memory<br><br>C stack backtrace:<br>./NBCog/NBCog[0x8095489]<br>./NBCog/NBCog(error+0x19)[0x8095709]<br>./NBCog/NBCog[0x8075a5e]<br>./NBCog/NBCog(createClosureNumArgsnumCopiedstartpc+0x54)[0x8076ab4]<br>./NBCog/NBCog[0x8066bed]<br>


[0xb57ab5e9]<br>./NBCog/NBCog[0x808f694]<br>./NBCog/NBCog(main+0x38a)[0x809668a]<br>/lib32/libc.so.6(__libc_start_main+0xf3)[0xf75800f3]<br><br><br>Smalltalk stack dump:<br>0xffe7ac34 M Delay&gt;schedule -1218533460: a(n) Delay<br>


0xffe7ac4c M Delay&gt;wait -1218533460: a(n) Delay<br>0xffe7ac64 M InputEventPollingFetcher&gt;waitForInput -1247953104: a(n) InputEventPollingFetcher<br>0xffe7ac90 I InputEventPollingFetcher(InputEventFetcher)&gt;eventLoop -1247953104: a(n) InputEventPollingFetcher<br>


0xffe7acb0 I [] in InputEventPollingFetcher(InputEventFetcher)&gt;installEventLoop -1247953104: a(n) InputEventPollingFetcher<br>0xffe7acd0 I [] in BlockClosure&gt;newProcess -1218533756: a(n) BlockClosure<br><br>Most recent primitives<br>


wait<br>signal<br>millisecondClockValue<br>millisecondClockValue<br>primSignal:atMilliseconds:<br>millisecondClockValue<br>wait<br>signal<br>wait<br>basicNew<br>millisecondClockValue<br>signal<br>primSignal:atMilliseconds:<br>


millisecondClockValue<br>wait<br>primGetNextEvent:<br>at:<br>class<br>wait<br>signal<br>... (this cycle repeats)<br>Aborted<br></div></div>
</blockquote></div><br><br clear="all"><div><br></div>-- <br>Lic. Javier Pim��s<br>Ciudad de Buenos Aires<br>
</div></div>