We are having the SAMe issue. First time thew invoice slides open.. but after that... NOTHING! Its quite frustrating! We have tried all the methods described as well. 

Additionally, this happens on ANY computer we open our QBO with so I belive its QBO account related? Seems strange but I can duplicate this on any laptop or desktop i use. Has anyone else tried and had same issue on multiple laptops/desktops? 

WAV