Crash in System Prefs when installing PrefPane

  • I am getting a crash in SysPrefs:

    objc_msgSend() selector name: alloc
    com.xericdesign.earthdesk.prefPane v.821 (MyPrefPane)
    objc[7541]: garbage collection is ON

    Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
    0  libobjc.A.dylib                  0x00007fff9067404d
    objc_msgSend_vtable1 + 13
    1  com.apple.frameworks.preferencepanes    0x00007fff950f0853
    -[NSPrefPaneBundle instantiatePrefPaneObject] + 181
    2  com.apple.systempreferences      0x000000010eb5f6fc 0x10eb57000 + 34556
    3  com.apple.systempreferences      0x000000010eb5ed32 0x10eb57000 + 32050

    This happens when my prefpane is double-clicked and tries to install.

    Reinstalling always works, so what might be happening?

    There is an older version of my prefpane already installed that is being
    replaced.

    This happens mostly on 10.7.4... But not for me, only my end users.

    Thanks,

    Trygve
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