edit phpThumb.config.php and (temporarily) set
$PHPTHUMB_CONFIG['disable_debug'] = false;
to view the details of this error in file "phpthumb.class.php" on line 4050
    [38] => SourceImageToGD() failed in file "phpthumb.class.php" on line 351
)

[2014-12-07 20:59:05] (ERROR @ csv.php) Could not generate thumbnail for "/assets/images/products/1183/market-xbit9zlyrpimj-lbtthh0q-600x800.jpg". Array
(
    [0] => phpThumb() v1.7.13-201406261000 in file "phpthumb.class.php" on line 220
    [1] => setCacheDirectory() starting with config_cache_directory = "/var/www/simsalabim.ru/www/core/cache/phpthumb/" in file "phpthumb.class.php" on line 961
    [2] => setting config_cache_directory to realpath(/var/www/simsalabim.ru/www/core/cache/phpthumb) = "/var/www/simsalabim.ru/www/core/cache/phpthumb" in file "phpthumb.class.php" on line 989
    [3] => setSourceFilename(/var/www/simsalabim.ru/www/ms_2zu0E6) set $this->sourceFilename to "/var/www/simsalabim.ru/www/ms_2zu0E6" in file "phpthumb.class.php" on line 271
    [4] => $AvailableImageOutputFormats = array(text;ico;bmp;wbmp;gif;png;jpeg) in file "phpthumb.class.php" on line 925
    [5] => $this->thumbnailFormat set to $this->config_output_format "jpeg" in file "phpthumb.class.php" on line 936
    [6] => $this->thumbnailFormat set to $this->f "jpeg" in file "phpthumb.class.php" on line 943
    [7] => $this->thumbnailQuality set to "99" in file "phpthumb.class.php" on line 953
    [8] => $this->sourceFilename set to "/var/www/simsalabim.ru/www/ms_2zu0E6" in file "phpthumb.class.php" on line 849
    [9] => SetCacheFilename() _src set from md5($this->sourceFilename) "/var/www/simsalabim.ru/www/ms_2zu0E6" = "b9c6a0a07bbc9bb12266f57bdc748e89" in file "phpthumb.class.php" on line 3443
    [10] => SetCacheFilename() _par set from md5(_bgffffff_farC_h472_w472_dpi150_q99) in file "phpthumb.class.php" on line 3476
    [11] => starting ExtractEXIFgetImageSize() in file "phpthumb.class.php" on line 3236
    [12] => GetImageSize(/var/www/simsalabim.ru/www/ms_2zu0E6) says image is 600x600 in file "phpthumb.class.php" on line 3246
    [13] => $this->useRawIMoutput=false because "bg" is set in file "phpthumb.class.php" on line 1502
    [14] => $this->useRawIMoutput=false after checking $UnAllowedParameters in file "phpthumb.class.php" on line 1508
    [15] => phpThumb_tempnam() returning "/var/www/simsalabim.ru/www/pThumbSJjI7O" in file "phpthumb.class.php" on line 4275
    [16] => ImageMagickSwitchAvailable(thumbnail) = 0 in file "phpthumb.class.php" on line 1445
    [17] => IMuseExplicitImageOutputDimensions = 0 in file "phpthumb.class.php" on line 1583
    [18] => ImageMagickSwitchAvailable(density) = 0 in file "phpthumb.class.php" on line 1445
    [19] => GetImageSize(/var/www/simsalabim.ru/www/ms_2zu0E6) SUCCEEDED: Array
(
    [0] => 600
    [1] => 600
    [2] => 2
    [3] => width="600" height="600"
    [bits] => 8
    [channels] => 3
    [mime] => image/jpeg
)
 in file "phpthumb.class.php" on line 1600
    [20] => GetImageSize(/var/www/simsalabim.ru/www/ms_2zu0E6) returned [w=600;h=600;f=2] in file "phpthumb.class.php" on line 1605
    [21] => source dimensions set to 600x600 in file "phpthumb.class.php" on line 1608
    [22] => SetOrientationDependantWidthHeight() starting with "600"x"600" in file "phpthumb.class.php" on line 3215
    [23] => SetOrientationDependantWidthHeight() setting w="472", h="472" in file "phpthumb.class.php" on line 3231
    [24] => Remaining $this->fltr after ImageMagick: (array(0) { } ) in file "phpthumb.class.php" on line 2132
    [25] => ImageMagick called as ('' -resize '472x472' '/var/www/simsalabim.ru/www/ms_2zu0E6[0]' png:'/var/www/simsalabim.ru/www/pThumbSJjI7O' 2>&1) in file "phpthumb.class.php" on line 2151
    [26] => ImageMagick failed with message (sh: 1: : Permission denied) in file "phpthumb.class.php" on line 2156
    [27] => deleting "/var/www/simsalabim.ru/www/pThumbSJjI7O" in file "phpthumb.class.php" on line 2188
    [28] => ImageMagickThumbnailToGD() failed in file "phpthumb.class.php" on line 3286
    [29] => SetOrientationDependantWidthHeight() starting with "600"x"600" in file "phpthumb.class.php" on line 3215
    [30] => SetOrientationDependantWidthHeight() setting w="472", h="472" in file "phpthumb.class.php" on line 3231
    [31] => EXIF thumbnail extraction: (size=0; type=""; 0x0) in file "phpthumb.class.php" on line 3343
    [32] => starting SourceImageToGD() in file "phpthumb.class.php" on line 3603
    [33] => Not using EXIF thumbnail data because $this->exif_thumbnail_data is empty in file "phpthumb.class.php" on line 3674
    [34] => $this->gdimg_source is still empty in file "phpthumb.class.php" on line 3726
    [35] => ImageMagickThumbnailToGD() failed in file "phpthumb.class.php" on line 3728
    [36] => phpThumb() v1.7.13-201406261000
http://phpthumb.sourceforge.net

Error messages disabled.

edit phpThumb.config.php and (temporarily) set
$PHPTHUMB_CONFIG['disable_debug'] = false;
to view the details of this error in file "phpthumb.class.php" on line 4050
    [37] => phpThumb() v1.7.13-201406261000
http://phpthumb.sourceforge.net