Hi,

You must be using the old version of gdata-core-1.0. Use at least 1.41.5.

I my POM file i have following entry:

 <repositories>
    <repository>
      <id>mandubian-mvn</id>
      <url>http://mandubian-mvn.googlecode.com/svn/trunk/mandubian-mvn/repository</url>
    </repository>
  </repositories>


    <dependencies>

    <dependency>
      <groupId>com.google.gdata</groupId>
      <artifactId>gdata-core-1.0</artifactId>
      <version>1.41.5</version>
    </dependency>

    <dependency>
      <groupId>com.google.gdata</groupId>
      <artifactId>gdata-youtube-2.0</artifactId>
      <version>1.41.5</version>
    </dependency>

    <dependency>
      <groupId>com.google.gdata</groupId>
      <artifactId>gdata-gtt-2.0</artifactId>
      <version>1.41.5</version>
    </dependency>
   </dependencies>

Thanks