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[zarl <1065780@xxxxxxxxxxxxxxxxxx>]

I see a remark in your error message that says:

  Unable to open file ''

Could you please try your double click trick again but this time using
file names without blanks (space character) and other special characters
in it, please?

See http://wiki.panotools.org/Hugin_FAQ#Special_Characters_in_Paths

What's your current version of OS X and hugin? Could you please also try
other file formats like JPG or TIFF? And is there a reason why you
provoke hick ups by renaming files?

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Title:
  Hugin crashes on opening pto file (OS X)

Status in Hugin - Panorama Tools GUI:
  Incomplete

Bug description:
  
  Hugin crashes from time to time on opening a pto file. It seems to hapen more often when other programs are open in the background.
  The same pto file can open 10 times without a problem and then 4 times cause Hugin to crash.

  Hugin 2011.4.0 (Mac)
  OS X 10.6.8
  iMac7,1, Intel Core 2 Duo, 2.4 GHz, 4 GB
  Activity monitor: page-outs: 0 bytes, free memory 1.95 GB
  pto file with 2 or 4 TIFF images, 16 bit gray, 717 x 2706, 3.9 MB

  
  Exception Type:  EXC_CRASH (SIGABRT)
  Exception Codes: 0x0000000000000000, 0x0000000000000000
  Crashed Thread:  0  Dispatch queue: com.apple.main-thread

  Application Specific Information:
  abort() called

  Thread 0 Crashed:  Dispatch queue: com.apple.main-thread
  0   libSystem.B.dylib             	0x922a4c5a __kill + 10
  1   libSystem.B.dylib             	0x922a4c4c kill$UNIX2003 + 32
  2   libSystem.B.dylib             	0x923375a5 raise + 26
  3   libSystem.B.dylib             	0x9234d6e4 abort + 93
  4   net.sourceforge.hugin.Hugin   	0x001b877d celeste::SafeAbs(int) + 125
  5   net.sourceforge.hugin.Hugin   	0x00039428 boost::shared_ptr<HuginBase::ImageCache::Entry>::operator->() const + 56
  6   net.sourceforge.hugin.base_wx 	0x011650a7 HuginBase::ImageCache::postEvent(boost::shared_ptr<HuginBase::ImageCache::Request>, boost::shared_ptr<HuginBase::ImageCache::Entry>) + 183
  7   net.sourceforge.hugin.Hugin   	0x0000fa95 huginApp::relayImageLoaded(ImageReadyEvent&) + 85
  8   libwx_macu-2.8.0.7.0.dylib    	0x005dbbb2 wxEvtHandler::ProcessEventIfMatches(wxEventTableEntryBase const&, wxEvtHandler*, wxEvent&) + 114

  In Console:
  12-10-12 03:00:00	[0x0-0x90090].net.sourceforge.hugin.Hugin[958]	MainFrame::RestoreLayoutOnNextResize()
  12-10-12 03:00:54	[0x0-0x90090].net.sourceforge.hugin.Hugin[958]	Number of images 4
  12-10-12 03:00:54	[0x0-0x90090].net.sourceforge.hugin.Hugin[958]	ContractViolation: 
  12-10-12 03:00:54	[0x0-0x90090].net.sourceforge.hugin.Hugin[958]	Precondition violation!
  12-10-12 03:00:54	[0x0-0x90090].net.sourceforge.hugin.Hugin[958]	Unable to open file ''.
  12-10-12 03:00:54	[0x0-0x90090].net.sourceforge.hugin.Hugin[958]	(/Users/Shared/development/hugin_related/hugin-2011.4.0/mac/../src/foreign/vigra/vigra_impex/codecman:206)
  12-10-12 03:00:54	[0x0-0x90090].net.sourceforge.hugin.Hugin[958]	ERROR: 03:00:54.104600 (/Users/Shared/development/hugin_related/hugin-2011.4.0/mac/../src/hugin_base/huginapp/ImageCache.cpp:658) loadImageSafely(): Error during image reading: 
  12-10-12 03:00:54	[0x0-0x90090].net.sourceforge.hugin.Hugin[958]	Precondition violation!
  12-10-12 03:00:54	[0x0-0x90090].net.sourceforge.hugin.Hugin[958]	Unable to open file ''.
  12-10-12 03:00:54	[0x0-0x90090].net.sourceforge.hugin.Hugin[958]	(/Users/Shared/development/hugin_related/hugin-2011.4.0/mac/../src/foreign/vigra/vigra_impex/codecman:206)
  12-10-12 03:00:54	[0x0-0x90090].net.sourceforge.hugin.Hugin[958]	/Users/Shared/development/hugin_related/ExternalPrograms/3way-repository/include/boost/smart_ptr/shared_ptr.hpp:418: failed assertion `px != 0'
  12-10-12 03:00:54	com.apple.launchd.peruser.502[100]	([0x0-0x90090].net.sourceforge.hugin.Hugin[958]) Job appears to have crashed: Abort trap
  12-10-12 03:00:55	ReportCrash[966]	Saved crash report for Hugin[958] version 2011.4.0 (cf9be9344356) to /Users/Willeke/Library/Logs/DiagnosticReports/Hugin_2012-10-12-030055_imac-van-willeke.crash

  Also from Console, another attempt, didn't crash:
  12-10-12 01:24:45	[0x0-0x3a03a].net.sourceforge.hugin.Hugin[410]	ERROR: 01:24:45.271502 (/Users/Shared/development/hugin_related/hugin-2011.4.0/mac/../src/hugin_base/huginapp/ImageCache.cpp:934) loadSafely(): Please set HuginBase::ImageCache::getInstance().asyncLoadCompleteSignal to handle asynchronous image loads.

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