General :: CWM ROM Flashing Status 0

I have tried to modify my rom on MTK6589 device but on CWM flashing it says Error, STATUS 0. I have tried edify and amend scripts but still no luck.

Here is my updater-script:

show_progress(0.1, 0);
format("ext4", "EMMC", "/dev/block/mmcblk0p5", "0", "/system");
mount("ext4", "EMMC", "/dev/block/mmcblk0p5", "/system");
package_extract_dir("system", "/system");
symlink("dumpstate", "/system/bin/dumpcrash");

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