Hi friend, 

Can you please try this on another browser and let us know what happens?

Also, what is the default name of the export (are you forcing the .csv postfix? ) 
Once we establish this stuff we should have a good idea where to go from here. 

Hi Matt,

Interestingly, other browsers report the same error. Tried it in Firefox and Opera. Lightning is not functional in IE.

I also tried adjusting the file name to the default name and a custom name with & without the .csv postfix but it still errors out.

Thank you for your help.

Hey np. 

Maybe shoot me your page XML so I can take a look?

Other than that, there could be a bug with the xml.
Sometimes you will need to rebuild the page to make some bugs go away. Maybe try this step now?

Here’s a simple page with one model and table that displays for the Contacts tab.

I went ahead and deleted everything and recreated the page but the exports still did not funtion.

One thing I noticed is if you preview the page from Page Builder the export were working and the URL is “https://domain–skuid.na30.visual.force.com/apex/skuid__ui?page=Contact_list”. Under Lightning the URL is https://domain.lightning.force.com/one/one.app#/sObject/Contact/home" and exports error out. Any way that the export can originate from the lightning domain instead of the visualforce domain? Think that would solve the issue.

<skuidpage showheader="true" personalizationmode="server" showsidebar="true" unsavedchangeswarning="yes" tabtooverride="Contact">

    <models>

        <model type="" id="Contacts" sobject="Contact" createrowifnonefound="false" query="true" limit="20" orderby="Account.Name ASC" datasource="salesforce">

            <fields>

                <field id="FirstName"/>

                <field id="LastName"/>

                <field id="AccountId"/>

                <field id="Account.Name"/>

                <field id="Phone"/>

                <field id="MobilePhone"/>

                <field id="Email"/>

                <field id="Salutation"/>

                <field id="Title"/>

                <field id="Description"/>

                <field id="Id"/>

                <field id="MailingAddress"/>

                <field id="MailingCity"/>

                <field id="MailingPostalCode"/>

                <field id="MailingStreet"/>

                <field id="Primary_Buyer__c"/>

            </fields>

            <conditions/>

            <actions/>

        </model>

    </models>

    <components>

        <pagetitle uniqueid="sk-1qUaWQ-81" model="Contacts">

            <maintitle>All Contacts</maintitle>

            <actions>

                <action type="redirect" label="Add Contact" icon="sk-icon-add" window="self" url="/apex/skuid__ui?page=Contact_New" uniqueid="sk-1kapOo-79"/>

            </actions>

        </pagetitle>

        <skootable uniqueid="sk-1qUddv-86" model="Contacts" showerrorsinline="true" buttonposition="left" mode="read" showsavecancel="true" createrecords="true" pagesize="10" showexportbuttons="true" searchbox="true" searchmethod="server" showconditions="true" emptysearchbehavior="query" allowscrollbars="true" floatheader="true">

            <fields>

                <field type="" id="AccountId" valuehalign="" optionsource="" displaytemplate="{{Name}}" allowordering="true" searchtemplate="{{Name}}" uniqueid="fi-1fMpTS-119">

                    <label>Account</label>

                    <searchfields>

                        <searchfield field="Name" operator="contains" query="true" show="true" return="true"/>

                        <searchfield field="RecordTypeId" operator="=" query="true" show="true" return="true"/>

                        <searchfield field="RecordType.Name" query="true" show="false" return="true"/>

                    </searchfields>

                </field>

                <field type="" id="FirstName" valuehalign="" allowordering="true" uniqueid="fi-1fMpTS-120"/>

                <field type="" id="LastName" valuehalign="" allowordering="true" uniqueid="fi-1fMpTT-121"/>

                <field type="" id="Salutation" valuehalign="" allowordering="true" uniqueid="fi-1fMpTT-122"/>

                <field type="" id="Title" valuehalign="" allowordering="true" uniqueid="fi-1fMpTT-123"/>

                <field type="" id="Phone" valuehalign="" allowordering="true" uniqueid="fi-1fMpTT-124"/>

                <field type="" id="MobilePhone" valuehalign="" allowordering="true" uniqueid="fi-1fMpTT-125"/>

                <field type="" id="Email" valuehalign="" allowordering="true" uniqueid="fi-1fMpTT-126"/>

                <field id="Primary_Buyer__c" hideable="true" uniqueid="fi-1kbRaZ-157"/>

                <field type="" id="Description" valuehalign="" uniqueid="fi-1fMpTT-127">

                    <label>TEMP Contact Role</label>

                    <renderconditions logictype="and" onhidedatabehavior="keep"/>

                    <enableconditions/>

                </field>

            </fields>

            <rowactions>

                <action type="redirect" label="Edit Contact" icon="sk-icon-edit" window="self" url="<a target="_blank" rel="nofollow" href="https://skuid.na30.visual.force.com/{{Id}}&quot;/>">https://skuid.na30.visual.force.com/{{Id}}"/></a>;

                <action type="delete"/>

            </rowactions>

            <massactions usefirstitemasdefault="true">

                <action type="massupdate"/>

                <action type="massdelete"/>

            </massactions>

            <views>

                <view type="standard"/>

            </views>

            <actions defaultlabel="Global Actions" defaulticon="sk-icon-magic" usefirstitemasdefault="true"/>

            <searchfields/>

            <renderconditions logictype="and"/>

            <exportproperties usetablecolumns="false" loadallrecords="true">

                <columns>

                    <column type="field" headertype="fieldlabel" field="Account.Name"/>

                    <column type="field" headertype="fieldlabel" field="FirstName"/>

                    <column type="field" headertype="fieldlabel" field="LastName"/>

                    <column type="field" headertype="fieldlabel" field="Title"/>

                    <column type="field" headertype="fieldlabel" field="Phone"/>

                    <column type="field" headertype="fieldlabel" field="MobilePhone"/>

                    <column type="field" headertype="fieldlabel" field="Email"/>

                </columns>

            </exportproperties>

        </skootable>

    </components>

    <resources>

        <labels/>

        <javascript/>

        <css/>

    </resources>

    <styles>

        <styleitem type="background" bgtype="none"/>

    </styles>

</skuidpage>