You can revert to previous versions of Spry using the backup copies of files created by the Spry Updater.
You should be aware that backed-up files and folders lose their file rights when Dreamweaver initially performs the backup. This happens due to a native default behavior that Dreamweaver uses to copy files.
On Windows, backup files and folders do not inherit the read-only attribute. Additionally, Dreamweaver does not back up files marked as Hidden, nor does Dreamweaver give you a warning about these files.
On the Macintosh, backed-up files and folders have “-rw-r--r--” access rights (or 644 equivalent), regardless of the folder’s original access rights. If at least one file designated for backup has no read access for the current user, Dreamweaver does not perform the backup and provides a warning message.