The pom.xml in the template project refers to a com.atlassian.bamboo:atlassian-bamboo-web:1.1-SNAPSHOT dependency.

Given that the plugin would presumably be built against a stable version of Bamboo (e.g. 1.0.1), it's probably not appropriate to link to a snapshot API. A quick look around the Atlassian repository indicates that there is no published version as yet.

Pom snippet:

<!-- This is the dependency to bamboo -->
<dependency>
<groupId>com.atlassian.bamboo</groupId>
<artifactId>atlassian-bamboo-web</artifactId>
<version>1.1-SNAPSHOT</version>
</dependency>