Check payload.arch

modules/exploits/windows/local/bypassuac_injection.rb

@@ -117,7 +117,7 @@ class Metasploit3 < Msf::Exploit::Local
     # decide, x86 or x64
     sysarch = sysinfo["Architecture"]
     if sysarch =~ /x64/i
-      unless(target_arch.first =~ /64/i) and (datastore['PAYLOAD'] =~ /64/i)
+      unless(target_arch.first =~ /64/i) and (payload_instance.arch.first =~ /64/i)
         fail_with(
             Exploit::Failure::BadConfig,
             "x86 Target Selected for x64 System"
@@ -134,7 +134,7 @@ class Metasploit3 < Msf::Exploit::Local
         register_files_for_cleanup("#{windir}\\System32\\sysprep\\CRYPTBASE.dll")
       end
     else
-      if (target_arch.first =~ /64/i) or (datastore['PAYLOAD'] =~ /64/i)
+      if (target_arch.first =~ /64/i) or (payload_instance.arch.first =~ /64/i)
         fail_with(
             Exploit::Failure::BadConfig,
             "x64 Target Selected for x86 System"