Does file exist using replace to change file extension

Here's the basic idea, although a popup from BAT is a little tricky, how pretty do you want that to be, and are you opposed to using a very small freeware utility EXE (standalone EVE, no install) that I often use?

First, here's the called BAT file (EE29170747.BAT in my test):

@echo off
setlocal

if exist "%~1\%~n2.laccdb" (
    echo The application is already open or closed improperly.  If the application is not running, contact Steve
    exit /b
)

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And here's an example of calling it:

@echo off
setlocal

call EE29170747b.bat "B:\EE\EE29170747\Files" "MyAccessDatabase.accdb"

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@echo off
setlocal

set Directory=%~1
set FileName=%~2
set FileBaseName=%~n2
if exist "%Directory%\%FileBaseName%.laccdb" (
	msg.exe %username% "%~nx0: The application is already open or closed improperly. If the application is not running, contact Steve"
	exit /b 1
)

:Continue
echo Starting '%Directory%\%FileName%' ...
REM ...

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if not exist "%~1\%~n2.laccdb" (

@oBdA

is msg.exe a Windows file?

Bill, is that the file you were talking about in your original post?

msg.exe %username% "Hello World"

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Bill, is that the file you were talking about in your original post?

@echo off
setlocal

if exist "%~1\%~n2.laccdb" (
    echo MsgBox "The application is already open or closed improperly." ^& vbCrLf ^& vbCrLf ^& "If the application is not running, contact Steve", vbOkOnly, "Warning - Already Running" >"%TEMP%\%~n0.vbs"
    wscript.exe "%TEMP%\%~n0.vbs"
    del "%TEMP%\%~n0.vbs"

    exit /b
)

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Bill,

I like the VB script version, here is what I'm using now for my test, and it's not working properly.   When I currently run the first batch file I get a screen flicker when a command box opens and then closes, but no other messages:

Routine which calls the 2nd bat:

@echo off
:: Launches a Bat file which checks to see if a file (2nd argument with .laccdb) exists in the folder (1st argument)
CALL E:\Developing Solutions\TestFolder\FileExists.bat "C:\Users\Admin\AppData\Roaming\Microsoft\Addins\" "Test.accdb"

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And the FileExist.bat:

@echo off
setlocal

:: Accepts two parameters, a folder name and a filename
:: Checks to see whether the filename with a ".laccdb" extension exists and displays message
::if exist "%~1\%~n2.laccdb" (
    echo MsgBox "The application is already open or closed improperly." ^& vbCrLf ^& vbCrLf ^& "If the application is not running, contact your system administator", vbOkOnly, "Warning - Already Running" >"%TEMP%\%~n0.vbs"
    wscript.exe "%TEMP%\%~n0.vbs"
    del "%TEMP%\%~n0.vbs"

    exit /b
)
 echo MsgBox "The application was not running", vbOkOnly, "Continue" >"%TEMP%\%~n0.vbs"
 wscript.exe "%TEMP%\%~n0.vbs"
 del "%TEMP%\%~n0.vbs"

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In the first bat, if this .bat is in the same folder as the 2nd, do I need the full path name or can I simply use:

Call FileExists.Bat "arg1" "arg2"

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Thanks, to both of you, that really helped, it has been so long since I've used batch files!