Unknown Validation Error

I have a combo box that is retrieving values from a view using a lookup with another combo box value.

The lookup appears to be working fine however there seems to be some server side validation appearing out of no where.

Server Side error: “Validation Error: Value is not valid”

Here is the code for the combo box:


<xp:comboBox id=“link_cat_sub”

								value="#{document.link_cat_sub}">

								

								<xp:selectItem

									itemLabel="Select One" itemValue="Select One"

									id="selectItem2">

								</xp:selectItem>

								<xp:selectItems id="selectItems2">

									<xp:this.value><![CDATA[#{javascript://var ctry = document.getItemValueString("link_cat");

var combo1 = getComponent(‘comboBox1’);

// value submitted from the browser

var ctry = combo1.getSubmittedValue();

var lst1 = @Unique(@DbLookup(@DbName(),“categories”,ctry,2));

@Explode(lst1,“,”)}]]></xp:this.value>

								</xp:selectItems>



							</xp:comboBox>

Any help would be greatly appreciated.