Safemode appears to be broken after my upgrade from RC1 to RC4. RC4 was unable to render my provisioning template with the following error:

There was an error rendering the FC-RHEL6-Kickstart template: compile error
/usr/lib/ruby/gems/1.8/gems/safemode-1.1.0/lib/safemode.rb:55: syntax error, unexpected tNEQ
...jail.concat((@osver.to_jail.!=(3) and if @osver.to_jail.!=(4...
                              ^
/usr/lib/ruby/gems/1.8/gems/safemode-1.1.0/lib/safemode.rb:55: syntax error, unexpected tNEQ
...!=(3) and if @osver.to_jail.!=(4) then
                              ^
/usr/lib/ruby/gems/1.8/gems/safemode-1.1.0/lib/safemode.rb:55: syntax error, unexpected kTHEN, expecting ')'
/usr/lib/ruby/gems/1.8/gems/safemode-1.1.0/lib/safemode.rb:57: syntax error, unexpected kELSE, expecting ')'
/usr/lib/ruby/gems/1.8/gems/safemode-1.1.0/lib/safemode.rb:59: syntax error, unexpected kEND, expecting ')'
end).to_jail.to_s)
   ^
/usr/lib/ruby/gems/1.8/gems/safemode-1.1.0/lib/safemode.rb:60: syntax error, unexpected tIDENTIFIER, expecting ')'
_erbout.to_jail.concat("\nbootloader ...
       ^
/usr/lib/ruby/gems/1.8/gems/safemode-1.1.0/lib/safemode.rb:68: syntax error, unexpected tNEQ
_erbout.to_jail.concat((if @osver.to_jail.!=(3) then
                                            ^
/usr/lib/ruby/gems/1.8/gems/safemode-1.1.0/lib/safemode.rb:68: syntax error, unexpected kTHEN, expecting ')'
/usr/lib/ruby/gems/1.8/gems/safemode-1.1.0/lib/safemode.rb:70: syntax error, unexpected kEND, expecting ')'
end).to_jail.to_s)
   ^
/usr/lib/ruby/gems/1.8/gems/safemode-1.1.0/lib/safemode.rb:71: syntax error, unexpected tIDENTIFIER, expecting ')'
_erbout.to_jail.concat("network --bootproto ")
       ^

Disabling Safrmode in Settings->Provisioning allowed the template to render properly.