Switching from Mercurial to Git Repository throws exception

org.apache.commons.configuration.ConversionException: 'repository.git.commandTimeout' doesn't map to an Integer object
	at org.apache.commons.configuration.AbstractConfiguration.getInteger(AbstractConfiguration.java:880)
	at org.apache.commons.configuration.AbstractConfiguration.getInt(AbstractConfiguration.java:851)
	at com.atlassian.bamboo.plugins.git.GitRepository.prepareConfigObject(GitRepository.java:535)
	at com.atlassian.bamboo.build.creation.RepositoryConfigHelper.prepareConfig(RepositoryConfigHelper.java:139)
	at com.atlassian.bamboo.ww2.actions.build.admin.config.repository.EditRepository.validate(EditRepository.java:97)
	at com.opensymphony.xwork.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:154)
	at com.atlassian.bamboo.ww2.interceptors.BambooWorkflowInterceptor.validateWorkflow(BambooWorkflowInterceptor.java:52)
	at com.atlassian.bamboo.ww2.interceptors.BambooWorkflowInterceptor.access$000(BambooWorkflowInterceptor.java:15)
	at com.atlassian.bamboo.ww2.interceptors.BambooWorkflowInterceptor$1.call(BambooWorkflowInterceptor.java:32)
	at com.atlassian.bamboo.ww2.interceptors.BambooWorkflowInterceptor$1.call(BambooWorkflowInterceptor.java:28)