Hi,
first of all, is this working?
I see progresstemplate tags twice.
<ProgressTemplate>
<progresstemplate>
<div id="divLoading" class="divCenter" >
<img id="imgLoading" src="App_Themes/DefaultTheme/Images/main-loader.gif" align="absmiddle" vspace="0" hspace="0" style="vertical-align:middle" />
</div>
</progresstemplate>
</ProgressTemplate>
Once you have a progress template in your master page, it should be good to go for all the child pages.
Hope this helps.
Happy coding!