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  <span>Hello<br>
<br>I have added the NSOutlineView to my app, implemented the datasource
 and 
a delegate.
<br>They are both defined as global variables to avoid garbage 
collection .. 
but still my app crashes after some time ... I think that it is a 
garbage collector, but can't identify what was collected.
<br>
<br>From log it seems that problem is here, but not sure:
<br>
<br>10  ???                               0x02cb252d 0 + 46867757
<br>11  com.apple.AppKit                  0x926da701 -[NSOutlineView 
_dataSourceValueForColumn:row:] <span 
__postbox-detected-content="__postbox-detected-date" 
class="__postbox-detected-content __postbox-detected-date" 
style="display: inline; font-size: inherit; padding: 0pt;"><span 
__postbox-detected-content="__postbox-detected-date" 
class="__postbox-detected-content __postbox-detected-date" 
style="display: inline; font-size: inherit; padding: 0pt;">+ 99</span></span>
<br>
<br>Here is full crash log:
<br>
<br>Thread 0 Crashed:  Dispatch queue: com.apple.main-thread
<br>0   libSystem.B.dylib                 0x95dabc5a __kill <span 
__postbox-detected-content="__postbox-detected-date" 
class="__postbox-detected-content __postbox-detected-date" 
style="display: inline; font-size: inherit; padding: 0pt;">+ 10
<br>1</span>   libSystem.B.dylib                 0x95dabc4c 
kill$UNIX2003 <span __postbox-detected-content="__postbox-detected-date"
 class="__postbox-detected-content __postbox-detected-date" 
style="display: inline; font-size: inherit; padding: 0pt;">+ <span 
__postbox-detected-content="__postbox-detected-date" 
class="__postbox-detected-content __postbox-detected-date" 
style="display: inline; font-size: inherit; padding: 0pt;">32</span></span><span
 __postbox-detected-content="__postbox-detected-date" 
class="__postbox-detected-content __postbox-detected-date" 
style="display: inline; font-size: inherit; padding: 0pt;">
<br>2</span>   libSystem.B.dylib                 0x95e3e5a5 raise <span 
__postbox-detected-content="__postbox-detected-date" 
class="__postbox-detected-content __postbox-detected-date" 
style="display: inline; font-size: inherit; padding: 0pt;">+ 26
<br>3</span>   libSystem.B.dylib                 0x95e546e4 abort <span 
__postbox-detected-content="__postbox-detected-date" 
class="__postbox-detected-content __postbox-detected-date" 
style="display: inline; font-size: inherit; padding: 0pt;">+ <span 
__postbox-detected-content="__postbox-detected-date" 
class="__postbox-detected-content __postbox-detected-date" 
style="display: inline; font-size: inherit; padding: 0pt;">93</span></span><span
 __postbox-detected-content="__postbox-detected-date" 
class="__postbox-detected-content __postbox-detected-date" 
style="display: inline; font-size: inherit; padding: 0pt;">
<br>4</span>   MacxoPlanet                       0x0009ff4d 
mono_handle_native_sigsegv + 685 (mini-exceptions.c:2185)
<br>5   MacxoPlanet                       0x00004f6e 
mono_sigsegv_signal_handler + 334 (mini.c:5917)
<br>6   libSystem.B.dylib                 0x95db105b _sigtramp <span 
__postbox-detected-content="__postbox-detected-date" 
class="__postbox-detected-content __postbox-detected-date" 
style="display: inline; font-size: inherit; padding: 0pt;">+ <span 
__postbox-detected-content="__postbox-detected-date" 
class="__postbox-detected-content __postbox-detected-date" 
style="display: inline; font-size: inherit; padding: 0pt;">43</span></span><span
 __postbox-detected-content="__postbox-detected-date" 
class="__postbox-detected-content __postbox-detected-date" 
style="display: inline; font-size: inherit; padding: 0pt;">
<br>7</span>   ???                               0xffffffff 0 + 
4294967295
<br>8   ???                               0x02cb45a8 0 + 46876072
<br>9   ???                               0x02cb4384 0 + 46875524
<br>10  ???                               0x02cb252d 0 + 46867757
<br>11  com.apple.AppKit                  0x926da701 -[NSOutlineView 
_dataSourceValueForColumn:row:] <span 
__postbox-detected-content="__postbox-detected-date" 
class="__postbox-detected-content __postbox-detected-date" 
style="display: inline; font-size: inherit; padding: 0pt;"><span 
__postbox-detected-content="__postbox-detected-date" 
class="__postbox-detected-content __postbox-detected-date" 
style="display: inline; font-size: inherit; padding: 0pt;">+ <span 
__postbox-detected-content="__postbox-detected-date" 
class="__postbox-detected-content __postbox-detected-date" 
style="display: inline; font-size: inherit; padding: 0pt;">99</span></span><span
 __postbox-detected-content="__postbox-detected-date" 
class="__postbox-detected-content __postbox-detected-date" 
style="display: inline; font-size: inherit; padding: 0pt;"></span></span><span
 __postbox-detected-content="__postbox-detected-date" 
class="__postbox-detected-content __postbox-detected-date" 
style="display: inline; font-size: inherit; padding: 0pt;">
<br>12</span>  com.apple.AppKit                  0x926da1da 
-[NSTableView 
preparedCellAtColumn:row:] + 335
<br>13  com.apple.AppKit                  0x926d99ec -[NSTableView 
_dirtyVisibleCellsForKeyStateChange] + 558
<br>14  com.apple.AppKit                  0x926d93ca -[NSTableView 
_windowChangedKeyState] + 332
<br>15  com.apple.CoreFoundation          0x91938220 
CFArrayApplyFunction + 224
<br>16  com.apple.AppKit                  0x92608ded -[NSView 
_windowChangedKeyState] + 127
<br>17  com.apple.CoreFoundation          0x91938220 
CFArrayApplyFunction + 224
<br>18  com.apple.AppKit                  0x92608ded -[NSView 
_windowChangedKeyState] + 127
<br>19  com.apple.CoreFoundation          0x91938220 
CFArrayApplyFunction + 224
<br>20  com.apple.AppKit                  0x92608ded -[NSView 
_windowChangedKeyState] + 127
<br>21  com.apple.CoreFoundation          0x91938220 
CFArrayApplyFunction + 224
<br>22  com.apple.AppKit                  0x92608ded -[NSView 
_windowChangedKeyState] + 127
<br>23  com.apple.CoreFoundation          0x91938220 
CFArrayApplyFunction + 224
<br>24  com.apple.AppKit                  0x92608ded -[NSView 
_windowChangedKeyState] + 127
<br>25  com.apple.CoreFoundation          0x91938220 
CFArrayApplyFunction + 224
<br>26  com.apple.AppKit                  0x92608ded -[NSView 
_windowChangedKeyState] + 127
<br>27  com.apple.AppKit                  0x927aad75 -[NSTabView 
_windowChangedKeyState] + 53
<br>28  com.apple.CoreFoundation          0x91938220 
CFArrayApplyFunction + 224
<br>29  com.apple.AppKit                  0x92608ded -[NSView 
_windowChangedKeyState] + 127
<br>30  com.apple.AppKit                  0x926d90cb -[NSSplitView 
_windowChangedKeyState] + 57
<br>31  com.apple.CoreFoundation          0x91938220 
CFArrayApplyFunction + 224
<br>32  com.apple.AppKit                  0x92608ded -[NSView 
_windowChangedKeyState] + 127
<br>33  com.apple.CoreFoundation          0x91938220 
CFArrayApplyFunction + 224
<br>34  com.apple.AppKit                  0x92608ded -[NSView 
_windowChangedKeyState] + 127
<br>35  com.apple.AppKit                  0x926d8e46 -[NSFrameView 
_windowChangedKeyState] + 104
<br>36  com.apple.AppKit                  0x92608adf -[NSWindow 
_setFrameNeedsDisplay:] + 205
<br>37  com.apple.AppKit                  0x9279838c endKeyAndMain + 126
<br>38  com.apple.AppKit                  0x9263f897 -[NSApplication 
sendEvent:] + 2987
<br>39  com.apple.AppKit                  0x925d4253 -[NSApplication 
run] + 917
<br>40  com.apple.AppKit                  0x925cc289 NSApplicationMain +
 574
<br>41  ???                               0x02cb2d8e 0 + 46869902
<br>42  ???                               0x02cb2b8c 0 + 46869388
<br>43  ???                               0x00561ff8 0 + 5644280
<br>44  ???                               0x00562156 0 + 5644630
<br>45  MacxoPlanet                       0x0000ecf4 
mono_jit_runtime_invoke 
+ 164 (mini.c:5791)
<br>46  MacxoPlanet                       0x00184354 mono_runtime_invoke
 + 
68 (object.c:2755)
<br>47  MacxoPlanet                       0x0018a41e 
mono_runtime_exec_main 
+ 238 (object.c:3939)
<br>48  MacxoPlanet                       0x0007464d mono_main + 6797 
(driver.c:1856)
<br>49  MacxoPlanet                       0x00001fd6 start + 54
<br>
<br>Thanks!! 
    <br>
  </span>
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