I have just upgraded to the latest version and I use Chrome
If I enable HTML5 uploader the upload file button disappears, the same is seen using my Iphone browswer
when disabled the button reappears
Any ideas, most of whatI could find related to Firefox browsers so I am none the wiser
yes it has found some files stating File does not contain expected contents.
should I just upload them or do I need to go through the entire upgrade process again
Obviously one of the attachment_editor_new.js files, I assume. But what about other files, such as PHP and XML files?
If there are any XML files missing or not matching the contents then you may need to rebuild master data (which is basically done from the install page, like the upgrade).
Fine. In that case, all you need to do is re-upload the files and that should be enough.
After re-uploading the files, you might want to run a file health check again just to make sure all files are present and correct. At that point the file uploader should work properly.