Caught exception: SOAP-ERROR: Parsing WSDL

Hello, I have a test program in PHP that creates some ad groups. This script ran successfully one year ago but not it's getting this error: *Caught exception: SOAP-ERROR: Parsing WSDL: Couldn't load from 'https://adwords.google.com/api/adwords/cm/v201309/CampaignService?wsdl' : failed to load

Not able to see my campaigns from my PHP script

**php version v5.3.2-1ubuntu4.5 I have extended one of the tests available in the Google Adwords PHP Library - AdWordsIntegrationTest.php and I just want to see the list of my campaigns. I was expecting to see all the campaigns from the adwords account and this list is not empty. However,

AuthenticationError.OAUTH_TOKEN_INVALID when running a test application

I am trying to create a very simple application developed on top of the sample from the GoogleAdwords PHP Library. The purpose of the application is to create a new AdWordsUser that tries to access the Campaign service. I have obtained the client_id, client_secret, access_token, refresh_token