I'm afraid, there is a disconnect. Please let me rephrase what I said. Currently, we do not have an error log entry to describe the error you're encountering so I cannot give you information on how to solve this. A white page is your server suppressing any action on that page due to an error, thus, we cannot use any information we have available to us to determine that error. Therefore, you would need to contact your hosting provider to obtain the error. We then can help you resolve the error once we know what the error is.
If you want to disable your third party applications/plugins to see if this makes any difference while waiting on a reply from your hosting provider, that is something else to do as this is often the issue when a third party add-on is not compatible with the most recent release.