Solution:
Try running the following 2 commands from the magento root directory as the magento user:
mv var /.update_error.flag
var/.tmp_update_error.flag
var/.update_queue.json
var/.tmp_update_queue.json
This will remove the flag that causes the Web Setup Wizard to stay stuck in this state.
or manually rename these files, .update_queue.json, .tmp_update_queue.json
