I can't get the Developer Console to work. All the other sys admins in my org have no problems but mine won't run a query. The menu items don't drop down and I get the following error.

Use the Query Editor tab to write and execute SOQL queries. Results are displayed in the Query Results Grid. Use the grid to create, update, and delete data. Take a quick tour...

I am using Chrome and it's up to date. I cleared all History but that hasn't helped either. 

I can't get the Developer Console to work. All the other sys admins in my org have no problems but mine won't run a query. The menu items don't drop down and I get the following error.

Use the Query Editor tab to write and execute SOQL queries. Results are displayed in the Query Results Grid. Use the grid to create, update, and delete data. Take a quick tour...

I am using Chrome and it's up to date. I cleared all History but that hasn't helped either.