Fatal error: Invalid arguments

[tcditgens]

While compressing png files with option "pngquant: true" it fails after an irregular number of png's.

I use v0.6.0 with these options:

png: {
    files: [{
        expand: true,
        cwd: '<%= res %>/rawimages',
        src: ['**/*.png'],
        dest: '<%= res %>/images'
    }],
    options: {
        pngquant: true
    }
}

Sometimes it walks through after three or four times...

[tcditgens]

BTW my png's are checked by pngcheck before.

[molant]

This is happening too in my side :(

[tigerclaw-az]

+1 Need this fixed

[kevva]

Test and see if it works from the dev version:

$ npm install https://github.com/kevva/grunt-contrib-imagemin/archive/imagemin.tar.gz

[sindresorhus]

Is this still an issue with 0.7.0?

[kevva]

Closing due to inactivity. Feel free to open if you're still experiencing this problem.