pete-sch

As I can see, you use the “wp_generate_attachment_metadata” function.

I tweaked my server to get a disk quote error again. There are the contents of the variable $metadata after running
$metadata = wp_generate_attachment_metadata( $image->ID, $fullsizepath ); in ajax_process_image().

Resize failed:

Array
(
    [width] => 600
    [height] => 398
    [hwstring_small] => height='84' width='128'
    [file] => 2010/03/portrait.gif
    [image_meta] => Array
        (
            [aperture] => 0
            [credit] =>
            [camera] =>
            [caption] =>
            [created_timestamp] => 0
            [copyright] =>
            [focal_length] => 0
            [iso] => 0
            [shutter_speed] => 0
            [title] =>
        )

)

Resize succeeded:

Array
(
    [width] => 600
    [height] => 398
    [hwstring_small] => height='84' width='128'
    [file] => 2010/03/portrait.gif
    [sizes] => Array
        (
            [thumbnail] => Array
                (
                    [file] => portrait-150x150.gif
                    [width] => 150
                    [height] => 150
                )

            [medium] => Array
                (
                    [file] => portrait-300x199.gif
                    [width] => 300
                    [height] => 199
                )

            [post-thumbnail] => Array
                (
                    [file] => portrait-267x180.gif
                    [width] => 267
                    [height] => 180
                )

            [S] => Array
                (
                    [file] => portrait-60x60.gif
                    [width] => 60
                    [height] => 60
                )

            [M] => Array
                (
                    [file] => portrait-180x180.gif
                    [width] => 180
                    [height] => 180
                )

            [F] => Array
                (
                    [file] => portrait-580x220.gif
                    [width] => 580
                    [height] => 220
                )

        )

    [image_meta] => Array
        (
            [aperture] => 0
            [credit] =>
            [camera] =>
            [caption] =>
            [created_timestamp] => 0
            [copyright] =>
            [focal_length] => 0
            [iso] => 0
            [shutter_speed] => 0
            [title] =>
        )

)

Bug is still present in the latest version.

Plugin version 2.0.3
WordPress version 3.0.1

Reproduction: Install and activate the plugin, set up some types and LOG OUT.

$wp_roles global variable is available only for the logged-on user.