Office web apps cache creation failed

If you got this error in your farm:

office web apps cache creation failed "Object reference not set to an instance of an object."

and you have tried this all:

• modifying the Cache DB's settings with Set-SPOfficeWebAppsCache
• moving the Cache Db onto a different Content Database
• removing the Word Viewing Service Application
• stopping Excel Calculation Services, PowerPoint Service, Word Viewing Service
• disabling and re-enabling the Office Web Apps Site Collection Feature

You might need to re-run the OWA setup and select Repair, This will sort out the issue.

However don't forget to run the SharePoint 2010 Products Configuration Wizard after the installation if your search doesn't work.