Installation with registry keys

dev_uninstall.cmd

 @echo off
 setlocal
 set argc=0
 for %%x in (%*) do set /a argc+=1
 if %argc% geq 2 goto regbegin
 :: Not enough arguments. Print help text.
 echo usage:
 echo   dev_uninstall.cmd ^<reg.exe 32 directory^> ^<reg.exe 64 directory^>
 echo(
 echo Uninstall Adblock Plus for IE in the developer mode
 echo   * Delete the registration the DLL as a per-user COM object with CSLID of the Adblock Plus for IE BHO
 echo(
 echo arguments:
 echo   ^<reg.exe 32 directory^>   ^| The directory for reg.exe to write into for 32 (resp. 64) bit registry 
 echo   ^<reg.exe 64 directory^>   ^| One of "system32", "SysWOW64", or "sysnative" 
 exit /b 0
 
 :regbegin
 :: Set REG. It's based on either the third or fourth argument.
 :: We test against "x86" because there are two possible 64-bit values.
 if /i %PROCESSOR_ARCHITECTURE% equ x86 (set R=%1) else set R=%2
 set REG="%WINDIR%\%R%\reg.exe"
 if exist %REG% goto regend
 echo File %REG% not found. Aborting.
 exit /b 1
 :regend
 
 echo REG=%REG%
-%REG% delete HKCU\Software\Classes\CLSID\{FFCB3198-32F3-4E8B-9539-4324694ED664} /f >nul 
-echo Done
+%REG% delete HKCU\Software\Classes\CLSID\{FFCB3198-32F3-4E8B-9539-4324694ED664} /f >nul 2>&1 
+%REG% delete "HKCU\Software\Adblock Plus for IE" /f >nul 2>&1   
+echo Done
+exit /b 0