Tried that a number of times, here's the resultant output, though I don't know why it's trying to find Opera
Output folder: C:\WINDOWS\system32\Macromed\Flash
Execute: "C:\WINDOWS\system32\Macromed\Flash\uninstall_plugin.exe"
Extract: NPSWF32.dll
Extract: NPSWF32_FlashUtil.exe
Extract: flashplayer.xpt
Copy to C:\Program Files\Opera\Program\Plugins\
Copy failed
Copy to C:\Program Files\Opera\Program\Plugins\
Copy failed
Copy to C:\Program Files\Opera\Program\Plugins\
Copy failed
Created uninstaller: C:\WINDOWS\system32\Macromed\Flash\uninstall_plugin.exe
Completed