Have just updated Beta ver. 4.03 to version 4.04 - no issues.
I am pleased to note that when updating I have no permissions problem with the attachments folder. This removes the need to reset the attachments permissions via FTP, which has occurred with every update of version 3 including ver. 126.96.36.199.
A final question: could the folder not be named fs-contact-form? I always forget and automatically look for this name.