Spring Data Gemfire 1.3.1 has a dependency on Gemfire 7.0.1. If you are using maven and you want to use GemFire 6.5.1, you need to configure this dependency in your pom: Something like:
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-gemfire</artifactId>
<version>1.3.1.RELEASE</version>
<exclusions>
<groupId>com.gemstone.gemfire</groupId>
<artifactId>gemfire</artifactId>
</exclusion>
</dependency>
<dependency>
<groupId>com.gemstone.gemfire</groupId>
<artifactId>gemfire</artifactId>
<version>6.5.1</version>
</dependency>