I just successfully updated to 7.1.1 with no problems. But I noticed a couple of items in the upgrade documentation that might use some cleaning up.
In Preparing the Files, step 5 says to upload ALL the files except for a list of items not to upload. That is followed by a list of specific directories, subdirectores and files to upload. There are a cache and a gallery directory in the unzipped directory. Those directories are not included in the list of specific directories to upload, nor are they included in the list of items not to upload. So it is not clear if they should be uploaded or not. I uploaded them. Things seem to be working so I expect they should have been in the list of "Upload these" items.
Maybe I misread the upgrade docs.
So far I am happy with the upgrade.