Why does this not cycle through full quotated arguments? (WinBatch)

@echo off

echo TRK Build Tool

set compilerpath=C:\Program Files (x86)\FreeBASIC\fbc

if not exist "Revision History\" mkdir "Revision History"
if not exist "Revision History\Compiler\" mkdir "Revision History\Compiler"

set stamp=%DATE% %TIME%
set stampdate=%stamp:~4,10%
set stamptime=%stamp:~-11,11%
set stampdate=%stampdate:~-4,4%%stampdate:~-10,2%%stampdate:~-7,2%
set stamptime=%stamptime:~0,2%%stamptime:~3,2%%stamptime:~6,2%%stamptime:~9,2%
set stamp=%stampdate:~0,4%-%stampdate:~4,2%%stampdate:~6,2%-%stamptime:~0,2%%stamptime:~2,2%-%stamptime:~4,2%%stamptime:~6,2%
echo DateTime: %stamp%
set timestamp=%stamp%

setlocal enabledelayedexpansion

set argCount=0
for %%x in (%*) do (
   set /A argCount+=1
   set "argVec[!argCount!]=%%~x"
)

echo Project Ct: %argCount%

if %argCount%==0 goto :eof

for /L %%i in (1,1,%argCount%) do call :debug %%i !argVec[%%i]!
    echo No.[%%i]: "!argVec[%%i]!"
    set prjname=!argVec[%%i]!
    echo Project No.[%%i] of %argCount%: %prjname%
goto eof:

:debug
echo Project No.%1: "%2"
set prjname=%2
if not %prjname%=="" (

tasklist /FI "IMAGENAME eq %prjname%.exe" 2>NUL | find /I /N "%prjname%.exe">NUL
if "%ERRORLEVEL%"=="0" taskkill -f -im "%prjname%.exe"

"%compilerpath%" "%prjname%.bas" -s gui "rc\%prjname%.rc" > "Debug %prjname%.log"

if not exist "Revision History\Compiler\%prjname%\" mkdir "Revision History\Compiler\%prjname%"

cmd /c F | xcopy "Debug %prjname%.log" "Revision History\Compiler\%prjname%\Debug %timestamp%.log"

)

GOTO :eof