Out of curiousity, I started the Shared Folder Management console from a command prompt (run as administrator) and entered fsmgmt.msc ' at the command prompt. The console started. Also, I tried fsmgmt.msc 'a. The console started again. Does ' or 'a with fsmgmt.msc hurt the console or the shares?
Also, I clicked New Share and a pop-up window had a help link about the firewall and what ports would be changed for tcp and udp. Does just opening the new share wizard alter the firewall?