At the bottom of your form, you have three reference fields.
The bottom two have the same name:
<div class="lineGroup">
<div class="fullColumnGroup">
<label for="fieldset_group_Reference" class="sublabel" >Reference 2:<span class="requiredIndicator"> *</span></label>
<div class="errorGroup">
<div class="fieldPair">
<div class="fieldGroup"> <span id="fieldset_group_Reference_Spry">
<textarea name="fieldset_group_Reference" id="fieldset_group_Reference" class="formTextarea_Medium" rows="1" cols="1" tabindex="29"></textarea>
<span class="textareaRequiredMsg">Please provide a Reference</span> </span> </div>
</div>
</div>
</div>
</div>
<div class="lineGroup">
<div class="fullColumnGroup">
<label for="fieldset_group_Rerference" class="sublabel" >Rerference 3:</label>
<div class="fieldPair">
<div class="fieldGroup">
<textarea name="fieldset_group_Rerference" id="fieldset_group_Rerference" class="formTextarea_Medium" rows="1" cols="1" tabindex="30"></textarea>
</div>
</div>
</div>
</div>
the second one has had the spry error div removed, but spry validation is still applied.
You can fix the error by changing the code for those two textareas to:
<div class="lineGroup">
<div class="fullColumnGroup">
<label for="fieldset_group_Reference_2" class="sublabel" >Reference 2:<span class="requiredIndicator"> *</span></label>
<div class="errorGroup">
<div class="fieldPair">
<div class="fieldGroup"> <span id="fieldset_group_Reference_2_Spry">
<textarea name="fieldset_group_Reference_2" id="fieldset_group_Reference_2" class="formTextarea_Medium" rows="1" cols="1" tabindex="29"></textarea>
<span class="textareaRequiredMsg">Please provide a Reference</span> </span> </div>
</div>
</div>
</div>
</div>
<div class="lineGroup">
<div class="fullColumnGroup">
<label for="fieldset_group_Rerference" class="sublabel" >Rerference 3:</label>
<div class="fieldPair">
<div class="fieldGroup"><span id="fieldset_group_Reference_Spry">
<textarea name="fieldset_group_Rerference" id="fieldset_group_Rerference" class="formTextarea_Medium" rows="1" cols="1" tabindex="30"></textarea>
<span class="textareaRequiredMsg">Please provide a Reference</span> </span>
</div>
</div>
</div>
</div>