Постоянные ошибки в логах

Пишу ВТОРОЙ раз, так как Василий не позволил мне отредактировать предыдущее сообщение и мне пришлось снова все писать!
Есть несколько проблемных логов, которые постоянно возникают…

1.

[2012-11-14 15:27:11] (ERROR @ /assets/components/gallery/connector.php) [phpThumbOf] Could not generate thumbnail: бла-бла/assets/gallery/2/13050002.jpg - Debug: Array
(
    [0] => phpThumb() v1.7.9-200712090829 in file "phpthumb.class.php" on line 216
    [1] => setCacheDirectory() starting with config_cache_directory = "бла-бла/core/cache/phpthumb/" in file "phpthumb.class.php" on line 919
    [2] => setting config_cache_directory to realpath(бла-бла/core/cache/phpthumb) = "бла-бла/core/cache/phpthumb" in file "phpthumb.class.php" on line 947
    [3] => ResolveFilenameToAbsolute() prepending $this->config_document_root (бла-бла) to $filename (/assets/gallery/2/13050002.jpg) resulting in ($AbsoluteFilename = "бла-бла/assets/gallery/2/13050002.jpg") in file "phpthumb.class.php" on line 1025
    [4] => setSourceFilename(бла-бла/assets/gallery/2/13050002.jpg) set $this->sourceFilename to "бла-бла/assets/gallery/2/13050002.jpg" in file "phpthumb.class.php" on line 243
    [5] => setCacheDirectory() starting with config_cache_directory = "бла-бла/assets/components/gallery/cache/" in file "phpthumb.class.php" on line 919
    [6] => setting config_cache_directory to realpath(бла-бла/assets/components/gallery/cache) = "бла-бла/assets/components/gallery/cache" in file "phpthumb.class.php" on line 947
    [7] => setSourceFilename(бла-бла/assets/gallery/2/13050002.jpg) set $this->sourceFilename to "бла-бла/assets/gallery/2/13050002.jpg" in file "phpthumb.class.php" on line 243
    [8] => skipping CleanUpCacheDirectory() set to purge (30.0 days; 100.00MB; 10,000 files) in file "phpthumb.class.php" on line 652
    [9] =>   file_exists() = 0 in file "phpthumb.class.php" on line 1101
    [10] => is_executable() = 0 in file "phpthumb.class.php" on line 1102
    [11] => ImageMagickThumbnailToGD() aborting because cannot find convert in $this->config_imagemagick_path (), and `which convert` returned () in file "phpthumb.class.php" on line 1131
    [12] => $AvailableImageOutputFormats = array(text;ico;bmp;wbmp;gif;png;jpeg) in file "phpthumb.class.php" on line 884
    [13] => $this->thumbnailFormat set to $this->config_output_format "jpeg" in file "phpthumb.class.php" on line 895
    [14] => $this->thumbnailFormat set to $this->f "jpeg" in file "phpthumb.class.php" on line 902
    [15] => $this->thumbnailQuality set to "80" in file "phpthumb.class.php" on line 912
    [16] => ResolveFilenameToAbsolute() NOT prepending $this->config_document_root (бла-бла) to $filename (бла-бла/assets/gallery/2/13050002.jpg) resulting in ($AbsoluteFilename = "бла-бла/assets/gallery/2/13050002.jpg") in file "phpthumb.class.php" on line 1022
    [17] => $this->sourceFilename set to "бла-бла/assets/gallery/2/13050002.jpg" in file "phpthumb.class.php" on line 813
    [18] => phpThumb() v1.7.9-200712090829

"бла-бла/assets/gallery/2/13050002.jpg" does not exist in file "phpthumb.class.php" on line 3647
    [19] => setCacheDirectory() starting with config_cache_directory = "бла-бла/assets/components/gallery/cache" in file "phpthumb.class.php" on line 919
    [20] => setting config_cache_directory to realpath(бла-бла/assets/components/gallery/cache) = "бла-бла/assets/components/gallery/cache" in file "phpthumb.class.php" on line 947
    [21] => SetCacheFilename() _src set from md5($this->sourceFilename) "бла-бла/assets/gallery/2/13050002.jpg" = "8d0b08ac773d178cd9f5b3c2c54eff42" in file "phpthumb.class.php" on line 3077
    [22] => SetCacheFilename() _par set from md5(_farB_h130_w130_dpi150_q80) in file "phpthumb.class.php" on line 3110
    [23] => starting ExtractEXIFgetImageSize() in file "phpthumb.class.php" on line 2897
    [24] => GetImageSize("бла-бла/assets/gallery/2/13050002.jpg") failed in file "phpthumb.class.php" on line 2920
    [25] => $this->useRawIMoutput=true after checking $UnAllowedParameters in file "phpthumb.class.php" on line 1232
    [26] => ImageMagickThumbnailToGD() aborting because ImageMagickCommandlineBase() failed in file "phpthumb.class.php" on line 1865
    [27] => ImageMagickThumbnailToGD() failed in file "phpthumb.class.php" on line 2927
    [28] => SetOrientationDependantWidthHeight() starting with ""x"" in file "phpthumb.class.php" on line 2876
    [29] => SetOrientationDependantWidthHeight() setting w="130", h="130" in file "phpthumb.class.php" on line 2892
    [30] => EXIF thumbnail extraction: (size=0; type=""; 0x0) in file "phpthumb.class.php" on line 2979
    [31] => starting SourceImageToGD() in file "phpthumb.class.php" on line 3229
    [32] => $this->useRawIMoutput=true after checking $UnAllowedParameters in file "phpthumb.class.php" on line 1232
    [33] => ImageMagickThumbnailToGD() aborting because ImageMagickCommandlineBase() failed in file "phpthumb.class.php" on line 1865
    [34] => starting ImageCreateFromFilename(бла-бла/assets/gallery/2/13050002.jpg) in file "phpthumb.class.php" on line 3152
    [35] => empty $filename or GetImageSize(бла-бла/assets/gallery/2/13050002.jpg) failed in file "phpthumb.class.php" on line 3201
    [36] => Populating $rawimagedata in file "phpthumb.class.php" on line 3209
    [37] => cannot fopen(бла-бла/assets/gallery/2/13050002.jpg) in file "phpthumb.class.php" on line 3212
    [38] => Not using EXIF thumbnail data because $this->exif_thumbnail_data is empty in file "phpthumb.class.php" on line 3278
    [39] => $this->gdimg_source is still empty in file "phpthumb.class.php" on line 3330
    [40] => ImageMagickThumbnailToGD() failed in file "phpthumb.class.php" on line 3332
    [41] => phpThumb() v1.7.9-200712090829

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

бла-бла/core/cache/phpthumb — права 777
бла-бла/assets/components/gallery/cache — права 777
но не смотря на это превьюшки создаются, галерея работает нормально

2.

[2012-11-14 15:28:18] (WARN @ /index.php) xPDO->toCache() could not cache object with signature objects/modSession/b218babfd181fec9be97414d51d4b600
[2012-11-14 15:28:24] (WARN @ /index.php) xPDO->toCache() could not cache object with signature objects/modSession/5d682c8f01fa6cb2f6c7083ab9bf7c83

думал это из-за кеша сессий — отключел, без изменений. может из-за кеша БД?

3.

[2012-11-14 15:28:22] (ERROR @ /index.php) Could not get table name for class: modFileMediaSource
[2012-11-14 15:28:28] (ERROR @ /index.php) Could not get table name for class: modFileMediaSource

Читал, что это из-за неправильной установки модыкса. переустанавливал раз 5 уже. в работе сайта и админки нареканий нет