Ошибка с открытием файла в своей программе

CHDIR "./game"
SCREEN 13
COLOR 1
LOCATE  6,8: PRINT "<Press any key to continue>"
DO
LOOP UNTIL INKEY$ <> ""
CLS
SCREEN 13
COLOR 2
LOCATE 5, 40
PRINT "Start Game"
LOOP UNTIL INKEY$ <> "1"
GOTO 1
DO
LOCATE 6, 40
PRINT "quit game"
DO
LOOP UNTIL INKEY$ <> "2"
GOTO 2
1 OPEN "./tcv.exe"
2 END

OPEN "./tcv.exe" FOR INPUT AS #1
' или
OPEN "./tcv.exe" FOR OUTPUT AS #1
 
OPEN "./tcv.exe" FOR APPEND AS #1
 
OPEN "./tcv.exe" FOR RANDOM AS #1 LEN = 4 ' или другое число
 
OPEN "./tcv.exe" FOR BINARY AS #1

CHDIR "./game"
SCREEN 13
COLOR 1
LOCATE  22,7: PRINT "<Press any key to continue>"
DO
LOOP UNTIL INKEY$ <> ""
CLS
COLOR 2
LOCATE 16,1
PRINT "1)"
LOCATE 18,1
PRINT "2)"
LOCATE 16,16
PRINT "Start game"
LOCATE 18,16
PRINT "Quit game"
LOCATE 22,1
INPUT z
IF z=1 THEN GOTO 1 ELSE GOTO 2
1 OPEN "./tcv.exe" FOR INPUT AS #1
2 END

CHDIR "./game"
SCREEN 13
COLOR 1
LOCATE  22,7: PRINT "<Press any key to continue>"
DO
LOOP UNTIL INKEY$ <> ""
CLS
COLOR 2
LOCATE 16,1
PRINT "1)"
LOCATE 18,1
PRINT "2)"
LOCATE 16,16
PRINT "Start game"
LOCATE 18,16
PRINT "Quit game"
LOCATE 22,1
INPUT z
IF z=1 THEN GOTO 1 ELSE GOTO 2
1 CHAIN "./game/tcv"
2 END