Flex/LCDS Server-to-data-source Paging

Question

First, What is your adapter definition?
Try this:

<adapters>
    <adapter-definition class="flex.data.adapters.JavaAdapter" 
        id="java-dao"></adapter-definition>
</adapters>

Second, add custom=”true” attribute to your paging property.

<paging enabled="true" pageSize="100" custom="true"/>

Third, possibly change your scope to application

Fourth, in your destination definition, add adapter=”java-dao” instead of having a reference to it.

<destination adapter="java-dao"  id="invoiceListDataService">

Fifth, make sure you’re Overridding the necessary methods (useFillPage, Collection fill, etc.)

@Override
public boolean useFillPage(List fillParameters)
{
    // enabling paged-fill for all fills
    return true;
}

See this thread for some helpful responses to a similar problem:
http://www.mail-archive.com/flexcoders@yahoogroups.com/msg111746.html