Error while migrating to Flex 4.5.1 (1067: Implicit coercion of a value...)

Question

I am getting the following error while migrating my application from Flex 3.6 to Flex 4.5.1:
1067: Implicit coercion of a value of type __AS3__.vec:Vector.<Object> to an unrelated type Array.
The error is thrown on the following piece of code:
var list:ArrayCollection=new ArrayCollection(dgSoftwareTitles.selectedItems);
dgSoftwareTitles is defined as:
<s:DataGrid id="dgShareCategoryForTransfer"
x="34"
y="369"
requestedRowCount="5"
width="90%"
selectedIndex="-1"
selectionMode="multipleRows">
<s:columns>
<s:ArrayList>
<s:GridColumn headerText="SoftwareTitle"
dataField="idSoftware"
visible="false"/>
<s:GridColumn headerText="SoftwareName"
dataField="softwareName"
visible="false"/>
...more GridColumns
</s:columns>
</s:ArrayList>
</s:DataGrid>
Any ideas why this would trow the "1067: Implicit coercion of a value of type __AS3__.vec:Vector.<Object> to an unrelated type Array" error?
Thanks!
Lee

Answer 1

I think that dgSoftwareTitles.selectedItems is a type of Vector while
public function ArrayCollection(source:Array = null) expects an array as a source.