ContractViolation: Postcondition violation! error in png_read_row(): Read Error (/build/buildd/hugin-2014.0.0+dfsg/src/foreign/vigra/vigra_impex/png.cxx:389) caught exception: Postcondition violation! error in png_read_row(): Read Error (/build/buildd/hugin-2014.0.0+dfsg/src/foreign/vigra/vigra_impex/png.cxx:389) convert: unable to open image `frame-046-0000.tif': No such file or directory @ error/blob.c/OpenBlob/2709. convert: no images defined `frame-046.png' @ error/convert.c/ConvertImageCommand/3210. rm: cannot remove ‘frame-046-0000.tif’: No such file or directory ContractViolation: Precondition violation! did not find a matching file type. (/build/buildd/hugin-2014.0.0+dfsg/src/foreign/vigra/vigra_impex/codecmanager.cxx:240) caught exception: Precondition violation! did not find a matching file type. (/build/buildd/hugin-2014.0.0+dfsg/src/foreign/vigra/vigra_impex/codecmanager.cxx:240) convert: unable to open image `frame-047-0000.tif': No such file or directory @ error/blob.c/OpenBlob/2709. convert: no images defined `frame-047.png' @ error/convert.c/ConvertImageCommand/3210. rm: cannot remove ‘frame-047-0000.tif’: No such file or directory ContractViolation: Precondition violation! did not find a matching file type. (/build/buildd/hugin-2014.0.0+dfsg/src/foreign/vigra/vigra_impex/codecmanager.cxx:240) caught exception: Precondition violation! did not find a matching file type. (/build/buildd/hugin-2014.0.0+dfsg/src/foreign/vigra/vigra_impex/codecmanager.cxx:240) convert: unable to open image `frame-048-0000.tif': No such file or directory @ error/blob.c/OpenBlob/2709. convert: no images defined `frame-048.png' @ error/convert.c/ConvertImageCommand/3210. rm: cannot remove ‘frame-048-0000.tif’: No such file or directory ContractViolation: Precondition violation! did not find a matching file type. (/build/buildd/hugin-2014.0.0+dfsg/src/foreign/vigra/vigra_impex/codecmanager.cxx:240) caught exception: Precondition violation! did not find a matching file type. (/build/buildd/hugin-2014.0.0+dfsg/src/foreign/vigra/vigra_impex/codecmanager.cxx:240) convert: unable to open image `frame-049-0000.tif': No such file or directory @ error/blob.c/OpenBlob/2709. convert: no images defined `frame-049.png' @ error/convert.c/ConvertImageCommand/3210. rm: cannot remove ‘frame-049-0000.tif’: No such file or directory