Repeater and itemAt undefined references

[porterneon]

Hi
I have issue with Repeater and his function itemAt(index). When I'm trying to find item in repeater I'm getting error:

TypeError: Result of expression 'dystrRepeater.itemAt' [undefined] is not a function.

TypeError: Result of expression 'dystrRepeater.itemAt' [undefined] is not a function.

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Function where error appears:

function autoRelease(number, isAuto)
    {
        var dystr = dystrRepeater.itemAt(parseInt(number- 1))
        dystr.isAutoRelease = isAuto
    }

function autoRelease(number, isAuto)
    {
        var dystr = dystrRepeater.itemAt(parseInt(number- 1))
        dystr.isAutoRelease = isAuto
    }

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On fedora everythong works fine, on winXP I'm getting error. What is going on? Is it bug on win Qt? Is it construction of autoRelease function incorrect?

My Qt version on winXp: Qt 4.7.3 for Desktop - MinGW 4.4 (Qt SDK)