Bamboo unable to handle S3 error response due to: NoClassDefFoundError: Could not initialize class com.amazonaws.services.s3.internal.S3ErrorResponseHandler

2015-02-02 23:54:00,462 INFO [http-bio-8085-exec-29] [AccessLogFilter] xxx GET https://collaboration-bamboo.internal.atlassian.com/rest/api/latest/result/HCIP-FQUALIFY1-QFY/16.json?expand=testResults.failedTests.testResult.errors 3152327kb
2015-02-02 23:54:00,485 ERROR [http-bio-8085-exec-29] [ThrowableExceptionMapper] Uncaught exception thrown by REST service: Could not initialize class com.amazonaws.services.s3.internal.S3ErrorResponseHandler
java.lang.NoClassDefFoundError: Could not initialize class com.amazonaws.services.s3.internal.S3ErrorResponseHandler
	at com.amazonaws.services.s3.AmazonS3Client.<init>(AmazonS3Client.java:258)
	at com.atlassian.aws.s3.BambooAmazonS3Client.<init>(BambooAmazonS3Client.java:34)
	at com.atlassian.aws.AmazonClients.newAmazonS3Client(AmazonClients.java:24)
	at com.atlassian.bamboo.build.artifact.S3ArtifactHandler.getS3Client(S3ArtifactHandler.java:334)
	at com.atlassian.bamboo.build.artifact.S3ArtifactHandler.access$000(S3ArtifactHandler.java:44)
	at com.atlassian.bamboo.build.artifact.S3ArtifactHandler$S3AccessData.<init>(S3ArtifactHandler.java:71)
	at com.atlassian.bamboo.build.artifact.S3ArtifactHandler$S3AccessData.<init>(S3ArtifactHandler.java:63)
	at com.atlassian.bamboo.build.artifact.S3ArtifactHandler.getArtifactLinkDataProvider(S3ArtifactHandler.java:446)
	at com.atlassian.bamboo.build.artifact.DefaultArtifactLinkManager.getArtifactLinkDataProviderInternal(DefaultArtifactLinkManager.java:289)
	at com.atlassian.bamboo.build.artifact.DefaultArtifactLinkManager.getArtifactLinkDataProvider(DefaultArtifactLinkManager.java:259)
	at com.atlassian.bamboo.build.artifact.ArtifactHandlingUtils.getArtifactUrl(ArtifactHandlingUtils.java:174)
	at com.atlassian.bamboo.build.artifact.ArtifactHandlingUtils.getArtifactUrl(ArtifactHandlingUtils.java:168)