Problems generating thumbnail images in 2.2.3?

[2012-06-14 02:54:02] (ERROR @ /index.php) [phpThumbOf] Could not generate thumbnail: home_rotation/X GAMES DECK SHOT 2.jpg - Debug: Array
(
    [0] => phpThumb() v1.7.9-200712090829 in file "phpthumb.class.php" on line 216
    [1] => setCacheDirectory() starting with config_cache_directory = "/home/xxxxx/public_html/core/cache/phpthumb/" in file "phpthumb.class.php" on line 919
    [2] => setting config_cache_directory to realpath(/home/xxxxx/public_html/core/cache/phpthumb) = "/home/xxxxx/public_html/core/cache/phpthumb" in file "phpthumb.class.php" on line 947
    [3] => setCacheDirectory() starting with config_cache_directory = "/home/xxxxx/public_html/assets/components/phpthumbof/cache/" in file "phpthumb.class.php" on line 919
    [4] => setting config_cache_directory to realpath(/home/xxxxx/public_html/assets/components/phpthumbof/cache) = "/home/xxxxx/public_html/assets/components/phpthumbof/cache" in file "phpthumb.class.php" on line 947
    [5] => setSourceFilename(home_rotation/X GAMES DECK SHOT 2.jpg) set $this->sourceFilename to "home_rotation/X GAMES DECK SHOT 2.jpg" in file "phpthumb.class.php" on line 243
    [6] => skipping CleanUpCacheDirectory() set to purge (30.0 days; 300.00MB; 10,000 files) in file "phpthumb.class.php" on line 652
    [7] =>   file_exists() = 0 in file "phpthumb.class.php" on line 1101
    [8] => is_executable() = 0 in file "phpthumb.class.php" on line 1102
    [9] => ImageMagickThumbnailToGD() aborting because cannot find convert in $this->config_imagemagick_path (), and `which convert` returned (which: no convert in (/bin:/usr/bin)) in file "phpthumb.class.php" on line 1131
    [10] => $AvailableImageOutputFormats = array(text;ico;bmp;wbmp;gif;png;jpeg) in file "phpthumb.class.php" on line 884
    [11] => $this->thumbnailFormat set to $this->config_output_format "jpeg" in file "phpthumb.class.php" on line 895
    [12] => $this->thumbnailFormat set to $this->f "jpeg" in file "phpthumb.class.php" on line 902
    [13] => $this->thumbnailQuality set to "75" in file "phpthumb.class.php" on line 912
    [14] => $this->sourceFilename set to "/home/xxxxx/public_html/home_rotation/X GAMES DECK SHOT 2.jpg" in file "phpthumb.class.php" on line 813
    [15] => phpThumb() v1.7.9-200712090829

"/home/xxxxx/public_html/home_rotation/X GAMES DECK SHOT 2.jpg" does not exist in file "phpthumb.class.php" on line 3647
    [16] => setCacheDirectory() starting with config_cache_directory = "/home/xxxxx/public_html/assets/components/phpthumbof/cache" in file "phpthumb.class.php" on line 919
    [17] => setting config_cache_directory to realpath(/home/xxxxx/public_html/assets/components/phpthumbof/cache) = "/home/xxxxx/public_html/assets/components/phpthumbof/cache" in file "phpthumb.class.php" on line 947
    [18] => SetCacheFilename() _src set from md5($this->sourceFilename) "/home/xxxxx/public_html/home_rotation/X GAMES DECK SHOT 2.jpg" = "5214b50b0d0ca66ba8fb65585a96f979" in file "phpthumb.class.php" on line 3077
    [19] => SetCacheFilename() _par set from md5(_farC_w640_dpi150_q75) in file "phpthumb.class.php" on line 3110
    [20] => starting ExtractEXIFgetImageSize() in file "phpthumb.class.php" on line 2897
    [21] => GetImageSize("/home/xxxxx/public_html/home_rotation/X GAMES DECK SHOT 2.jpg") failed in file "phpthumb.class.php" on line 2920
    [22] => $this->useRawIMoutput=true after checking $UnAllowedParameters in file "phpthumb.class.php" on line 1232
    [23] => ImageMagickThumbnailToGD() aborting because ImageMagickCommandlineBase() failed in file "phpthumb.class.php" on line 1865
    [24] => ImageMagickThumbnailToGD() failed in file "phpthumb.class.php" on line 2927
    [25] => SetOrientationDependantWidthHeight() starting with ""x"" in file "phpthumb.class.php" on line 2876
    [26] => SetOrientationDependantWidthHeight() setting w="640", h="0" in file "phpthumb.class.php" on line 2892
    [27] => exif_thumbnail() does not exist, cannot extract EXIF thumbnail in file "phpthumb.class.php" on line 2974
    [28] => starting SourceImageToGD() in file "phpthumb.class.php" on line 3229
    [29] => $this->useRawIMoutput=true after checking $UnAllowedParameters in file "phpthumb.class.php" on line 1232
    [30] => ImageMagickThumbnailToGD() aborting because ImageMagickCommandlineBase() failed in file "phpthumb.class.php" on line 1865
    [31] => starting ImageCreateFromFilename(/home/xxxxx/public_html/home_rotation/X GAMES DECK SHOT 2.jpg) in file "phpthumb.class.php" on line 3152
    [32] => empty $filename or GetImageSize(/home/xxxxx/public_html/home_rotation/X GAMES DECK SHOT 2.jpg) failed in file "phpthumb.class.php" on line 3201
    [33] => Populating $rawimagedata in file "phpthumb.class.php" on line 3209
    [34] => cannot fopen(/home/xxxxx/public_html/home_rotation/X GAMES DECK SHOT 2.jpg) in file "phpthumb.class.php" on line 3212
    [35] => Not using EXIF thumbnail data because $this->exif_thumbnail_data is empty in file "phpthumb.class.php" on line 3278
    [36] => $this->gdimg_source is still empty in file "phpthumb.class.php" on line 3330
    [37] => ImageMagickThumbnailToGD() failed in file "phpthumb.class.php" on line 3332
    [38] => phpThumb() v1.7.9-200712090829

Unknown image type identified by "" () in SourceImageToGD()[3444] in file "phpthumb.class.php" on line 3647
    [39] => SourceImageToGD() failed in file "phpthumb.class.php" on line 323
)