[SalesForce] Exact Target connection error

I'm working in a Salesforce instance with the Exact Target integration installed, and for some reason the unsubscribe, resubscribe and 'Send ExactTarget Email' links on the Contact do not work.

When either unsubscribe or resubscribe is clicked, I get the message:

"The connection to ExactTarget is currently unavailable. Try your
request again later. if the problem persists,please contact your
system administrator."

Calling Webservice method in the managed package from Execute Anonymous returns "connection error".

The administrator account I'm working in is also an administrator in ExactTarget, and thus should have all necessary permissions.
I mention the error with the Send E-mail link because while it is different, it might be related. In that case I am taken to a page which says "Insufficient User Permissions," but again, as far as I can tell the account has full permissions, and is capable of sending e-mails from within ExactTarget.

Best Answer

This is usually an issue with the "Field Level Security" for Contacts.

On the first link below, the "Field Level Security" steps are as follows. Once updated, you should see that error no longer:

http://help.exacttarget.com/fr-FR/documentation/integrated_products__crm_and_web_analytic_solutions/exacttarget_salesforce_integration_v5/salesforce_v5_install_guide/v5_package_installation/

https://help.salesforce.com/apex/HTViewHelpDoc?id=customize_layoutoverview.htm&language=en_US

If you continue to see errors after confirming field level security is good, it may be an issue specific to your Stack (if on Stack7). Follow the below steps and see if that resolves your issue.

-In Salesforce, Select Setup 
-Select 'Security Controls' 
-Select 'Remote Site Settings' 
-Find the entry for S7_SOAP 
-Select the Edit options 
-Change the URL value from https://webservice.s4.exacttarget.com to https://webservice.s7.exacttarget.com 
-Click Save