We have simple setup, jenkins ver. 1.596.1 and delivery pipe plugin ver. 0.8.10, some test jobs. After adding to pipline one or more builds and saving this, we can see at view screen message "Error communicating to server! Server Error". At console i see many attempts to get http://jenkins-test/view/test/api/json?_=1427128942050 (number changes any time). When i open that link i get stacktrace, i'll attach txt file with it