OWB error referencing com.niku.xmlserver.blob.NKCalendar - unable to update project

Products

• Clarity PPM SaaS
• Clarity PPM On Premise

Issue/Introduction

Open Workbench (OWB) Error prevents project managers from being able to update projects. 

Error: npWbench - Unable to open Project PRJXXXXXX. An Exception occured: java.lang.ClassCastExeception: com.niku.xmlserver.core.NKBoolean cannot be cast to com.niku.xmlserver.blob.NKCalendar

Cause

This can be related to a time slicing issue. Check the bg-ca.logs for any time slicing errors during the time frame the issue was reported. 

Resolution

If you do see an error in the logs referencing Slice value is not in the valid range, this issue may recover with no known actions taken, but if not, see KB: 'Slice value is not valid range' in bg logs.