I’m sorry to hear you’re having problems with the latest version. That sounds like there is a code error occurring, and you have visible errors turned off (which is correct) so it’s showing a white page. Do you log errors? If so, the error log could provide some answers for us.
That’s strange that the pages have errors, but not posts. I would like to ask you more questions, including which WordPress versions you are using, and get a list of plugins from you so I see if there are compatibility issues going on here. Also, please include the version PHP if you know it. If you are not comfortable posting all of that publicly, you can use the Support form and send it to me in private.
I will be looking into this issue. The more info you can provide, the more helpful that will be as I try to fix this.