How to fix Devexpress ASpxUploadControl control when pressing Add button in firefox?

Hi

I'm using ASpxUploadControl from devexpress asp.net tools, 'Add' button was allowed and when I press it in Firefox4 I get this javascript error:

    this.fileInputSeparatorTemplateNode is undefined
    Source File: http://localhost:21390/DXR.axd?r=1_53
    Line: 370  

But when using it on IE开发者_运维问答8 every thing is all right, any help with this ?

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which version of DX controls are you using? I tried to reproduce the problem using the ASPxUploadControl - Multi-File Upload demo (it is built using the latest, 10.2.8, release) and do not see this issue. Please try to install the same version, perhaps it will help.