SVG 1.1 and "Clipping will be lost on roundtrip to Tiny"

Hi All,

I have the following SVG 1.1 file that will  not load correctly into Illustrator. It keeps complaining that "Clipping will be lost on roundtrip to Tiny". I have cut and paste the file below so you can try it. I also have a far bigger file with masks and paths arranged in a similar manner that works just fine. Why is this file loading in incorrectly?

<?xml version="1.0" encoding="utf-8" standalone="no"?>

<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"

"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">

<svg

    width="215.900000mm"

    height="279.400000mm"

    viewBox="0 0 1.000000 1.333333"

    version="1.1"

    xmlns="http://www.w3.org/2000/svg">

    <desc>SVG output</desc>

    <defs>

      <title>Eraser masks for layer 2</title>

        <mask id="mask_0_layer_0">

            <g>

                <rect x="0" y="0" width="100%" height="100%" fill="rgb(255,255,255)" mask="url(#mask_1_layer_0)"/>

                <path d = "M 0.330697 0.682357A0.005750 0.005750 0 1 0 0.325563 0.692647C0.325617 0.692675 0.325671 0.692702 0.325725 0.692729C0.359829 0.714309 0.359435 0.714119 0.360839 0.714836A0.005750 0.005750 0 1 0 0.365952 0.704535C0.364466 0.703776 0.364930 0.704001 0.363332 0.703237C0.331204 0.682612 0.330951 0.682483 0.330697 0.682357Z" />

            </g>

        </mask>

        <mask id="mask_2_layer_0">

            <g>

                <rect x="0" y="0" width="1.000000" height="1.333333" fill="rgb(255,255,255)" />

            </g>

        </mask>

    </defs>

    <g id="Background_1" opacity="1.0">

        <title>Eraser masks for layer 2</title>

        <rect x="0" y="0" width="1.000000" height="1.333333" fill="rgb(255,255,255)"/>

    </g>

    <g id="layer_1" opacity="1.0">

        <title>Eraser masks for layer 2</title>

            <g id ="group_0_0_mask_0" mask="url(#mask_0_layer_0)">

                <g id="group0_000" fill="rgb(0,0,0)">

                <path d = "M 0.315609 0.741120A0.005267 0.005267 0 1 0 0.325031 0.745830C0.325237 0.745418 0.325444 0.745007 0.325646 0.744593C0.325918 0.744039 0.326180 0.743479 0.326433 0.742916 C0.382943 0.669634 0.382727 0.669867 0.385531 0.666963A0.005267 0.005267 0 1 0 0.377937 0.659663C0.375116 0.662584 0.375340 0.662343 0.372570 0.665246C0.372084 0.665756 0.371602 0.666271 0.371117 0.666783 C0.316278 0.739784 0.315943 0.740451 0.315609 0.741120Z" fill="rgb(0,0,0)"/>

            </g>

            </g>

    </g>

</svg>

It loads just fine into all the browsers just not Illustrator. Any ideas as to why this happens and what I need to change in the file would be greatly appreciated.

Regards,

William