OWB Crashing error npWBench.exe has stopped working in 15.7 patch 1

Products

• Clarity PPM On Premise
• Clarity PPM SaaS

Issue/Introduction

Open Workbench is crashing is a few scenarios including:

• Closing a project in OWB
• Adding a new task after filtering on phases and one resource 

There was a defect that was fixed (DE49803) in 15.7 patch 1, but in 15.7 patch 1, there are still some crashing issues as noted above. 

Steps to Reproduce when closing a project in OWB:

1. Open OWB and click the New icon to create a new project
2. Create two tasks
3. Add a resource to the project in OWB
4. Assign the resource to one task
5. Save the project locally
6. Click the x right next to the project name in OWB to attempt to close the project (not the x in the upper right hand corner that closes OWB completely)

Expected Results:  Save is successful and OWB remains open

Actual Results: OWB crashes with error npWBench.exe has stopped working. (Clicking the Close Program message in the error popup up window closes OWB)

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Steps to Reproduce when creating a new task/using filters:

1. Open OWB and create a new project
2. Create three tasks: Make the first task a phase, the second task an activity, and the third task a regular task
3. Add a resource to the project in OWB
4. Assign the resource to the child task (the third task)
5. In the Task menu options, select the resource from step 3 from the drop down, and change the Type from Task to phase
6. Attempt to create a new task

Expected Results:  Task is created successfully

Actual Results: OWB crashes with error npWBench.exe has stopped working.
(Clicking the Close Program message in the error popup up window closes OWB)

Cause

This issue is caused by: DE52066

Environment

Release : 15.7, 15.7 patch 1

Component : OPEN WORKBENCH (OWB)

Resolution

Fixed in Clarity 15.8, Clarity 15.7.1.2 (15.7.1 patch 2), and Clarity 15.6.1.4 (15.6.1 patch 4)

Workaround: 
To avoid the issue when closing projects:

1. Save all open projects in OWB
2. Click the top x in the right hand corner of OWB to close out of OWB completely. 
    (OWB will close all open projects versus just the one project, so make sure to save changes to all open projects first)

Additional Information

For a similar issue fixed in see: OWB Keeps Crashing when inserting tasks after Upgrade fixed in 15.7.1 and also patched in 15.7.0.1 (15.7 patch 1) and 15.6.1.3 (15.6.1 patch 3)