Thumbnail generation unsuccessful

• DEBUG post_id=96
• DEBUG Found YAPB image
• DEBUG h=100
• DEBUG q=70
• DEBUG sx=100
• DEBUG sy=0
• DEBUG sw=600
• DEBUG sh=600
• ERROR phpThumb couldn't generate thumbnail.
• INFO Writing out phpThumb internal debug messages:
• DEBUG phpThumb: phpThumb() v1.7.9-200805132119 in file "phpthumb.class.php" on line 216
• DEBUG phpThumb: setSourceFilename(/foto/blog/fotos/2009/10/p71808771.jpg) set $this->sourceFilename to "/foto/blog/fotos/2009/10/p71808771.jpg" in file "phpthumb.class.php" on line 243
• DEBUG phpThumb: Leaving $this->config_imagemagick_path as (http://www.klaus-pollmann.de/foto/blog/fotos/) because !is_execuatable(realpath($this->config_imagemagick_path)) () in file "phpthumb.class.php" on line 1102
• DEBUG phpThumb: file_exists(http://www.klaus-pollmann.de/foto/blog/fotos/) = 0 in file "phpthumb.class.php" on line 1105
• DEBUG phpThumb: is_executable(http://www.klaus-pollmann.de/foto/blog/fotos/) = 0 in file "phpthumb.class.php" on line 1106
• DEBUG phpThumb: ImageMagick version checked with "http://www.klaus-pollmann.de/foto/blog/fotos/ --version" in file "phpthumb.class.php" on line 1152
• DEBUG phpThumb: ImageMagick did not return recognized version string () in file "phpthumb.class.php" on line 1158
• DEBUG phpThumb: ImageMagick convert --version says "" in file "phpthumb.class.php" on line 1160
• DEBUG phpThumb: ImageMagickThumbnailToGD() aborting because cannot find convert in $this->config_imagemagick_path (http://www.klaus-pollmann.de/foto/blog/fotos/), and `which convert` returned () in file "phpthumb.class.php" on line 1135
• DEBUG phpThumb: $AvailableImageOutputFormats = array(text;ico;bmp;wbmp;gif;png;jpeg) in file "phpthumb.class.php" on line 888
• DEBUG phpThumb: $this->thumbnailFormat set to $this->config_output_format "jpeg" in file "phpthumb.class.php" on line 899
• DEBUG phpThumb: $this->thumbnailQuality set to "70" in file "phpthumb.class.php" on line 916
• DEBUG phpThumb: ResolveFilenameToAbsolute() prepending $this->config_document_root (/var/www/web74/html/klaus/foto/blog) to $filename (/foto/blog/fotos/2009/10/p71808771.jpg) resulting in ($AbsoluteFilename = "/var/www/web74/html/klaus/foto/blog/foto/blog/fotos/2009/10/p71808771.jpg") in file "phpthumb.class.php" on line 1029
• DEBUG phpThumb: $this->sourceFilename set to "/var/www/web74/html/klaus/foto/blog/foto/blog/fotos/2009/10/p71808771.jpg" in file "phpthumb.class.php" on line 817
• DEBUG phpThumb: phpThumb() v1.7.9-200805132119 "/var/www/web74/html/klaus/foto/blog/foto/blog/fotos/2009/10/p71808771.jpg" does not exist in file "phpthumb.class.php" on line 3709
• DEBUG phpThumb: setCacheDirectory() starting with config_cache_directory = "" in file "phpthumb.class.php" on line 923
• DEBUG phpThumb: $this->config_cache_directory () is not a directory in file "phpthumb.class.php" on line 959
• DEBUG phpThumb: SetCacheFilename() failed because $this->config_cache_directory is empty in file "phpthumb.class.php" on line 3076
• DEBUG phpThumb: starting ExtractEXIFgetImageSize() in file "phpthumb.class.php" on line 2920
• DEBUG phpThumb: GetImageSize(/var/www/web74/html/klaus/foto/blog/foto/blog/fotos/2009/10/p71808771.jpg) says image is x in file "phpthumb.class.php" on line 2930
• DEBUG phpThumb: GetImageSize("/var/www/web74/html/klaus/foto/blog/foto/blog/fotos/2009/10/p71808771.jpg") failed in file "phpthumb.class.php" on line 2959
• DEBUG phpThumb: $this->useRawIMoutput=true after checking $UnAllowedParameters in file "phpthumb.class.php" on line 1252
• DEBUG phpThumb: ImageMagickThumbnailToGD() aborting because ImageMagickCommandlineBase() failed in file "phpthumb.class.php" on line 1891
• DEBUG phpThumb: ImageMagickThumbnailToGD() failed in file "phpthumb.class.php" on line 2966
• DEBUG phpThumb: SetOrientationDependantWidthHeight() starting with ""x"" in file "phpthumb.class.php" on line 2899
• DEBUG phpThumb: SetOrientationDependantWidthHeight() setting w="0", h="100" in file "phpthumb.class.php" on line 2915
• DEBUG phpThumb: EXIF thumbnail extraction: (size=0; type=""; 0x0) in file "phpthumb.class.php" on line 3015
• DEBUG phpThumb: starting SourceImageToGD() in file "phpthumb.class.php" on line 3273
• DEBUG phpThumb: $this->useRawIMoutput=true after checking $UnAllowedParameters in file "phpthumb.class.php" on line 1252
• DEBUG phpThumb: ImageMagickThumbnailToGD() aborting because ImageMagickCommandlineBase() failed in file "phpthumb.class.php" on line 1891
• DEBUG phpThumb: starting ImageCreateFromFilename(/var/www/web74/html/klaus/foto/blog/foto/blog/fotos/2009/10/p71808771.jpg) in file "phpthumb.class.php" on line 3188
• DEBUG phpThumb: empty $filename or GetImageSize(/var/www/web74/html/klaus/foto/blog/foto/blog/fotos/2009/10/p71808771.jpg) failed in file "phpthumb.class.php" on line 3237
• DEBUG phpThumb: Populating $rawimagedata in file "phpthumb.class.php" on line 3245
• DEBUG phpThumb: cannot fopen(/var/www/web74/html/klaus/foto/blog/foto/blog/fotos/2009/10/p71808771.jpg) in file "phpthumb.class.php" on line 3256
• DEBUG phpThumb: Not using EXIF thumbnail data because $this->exif_thumbnail_data is empty in file "phpthumb.class.php" on line 3329
• DEBUG phpThumb: $this->gdimg_source is still empty in file "phpthumb.class.php" on line 3381
• DEBUG phpThumb: ImageMagickThumbnailToGD() failed in file "phpthumb.class.php" on line 3383
• DEBUG phpThumb: phpThumb() v1.7.9-200805132119 failed to open "/var/www/web74/html/klaus/foto/blog/foto/blog/fotos/2009/10/p71808771.jpg" SourceImageToGD() [3487] in file "phpthumb.class.php" on line 3709
• DEBUG phpThumb: SourceImageToGD() failed in file "phpthumb.class.php" on line 323