delete possible local (old) msi-file, exception handling copy (new) msi-file

CLIENT_DATA/setup32.ins

@@ -7,6 +7,7 @@
 requiredWinstVersion >= "4.10.8.6"
 
 
+DefVar $msifile$
 DefVar $officescan.fqdn$
 DEfVar $officescan.sharename$
 DefVar $domainuser.loginname$
@@ -28,6 +29,7 @@ Set $officescan.fqdn$ = GetProductProperty ("officescan.fqdn","values")
 Set $officescan.sharename$ = GetProductProperty ("officescan.sharename","values")
 Set $domainuser.loginname$ = GetProductProperty ("domainuser.loginname","values")
 Set $domainuser.password$ = GetProductProperty ("domainuser.password","values")
+Set $msifile$ = "%SystemDrive%\tmp\agentWin32.msi"
 
 Set $connectionstr$ = "\\" + $officescan.fqdn$ + "\" + $officescan.sharename$ + " /user:" + $domainuser.loginname$ + " " + $domainuser.password$
 
@@ -95,6 +97,9 @@ else
 		Sub_get_licensekey
 	endif
 	
+        if FileExists($msifile$)
+           DosInAnIcon_delmsi
+        EndIf
 
 	comment "Start setup program"
         DosInAnIcon_TMWF
@@ -102,27 +107,28 @@ else
 	comment "Copy files"
         Files_install /32Bit
 
+	if not (FileExists($msifile$))
+           isFatalError
+        Endif
+
         Winbatch_install
 	Sub_check_exitcode
 
-
 endif
 
 [DosInAnIcon_TMWF]
 net use f: /delete /y
 net use f: $connectionstr$
 
+[DosInAnIcon_delmsi]
+del $msifile$
+
 [Files_install]
 copy "F:\Download\agentWin32.msi" %SystemDrive%\tmp\
 
 [Winbatch_install]
-; Choose one of the following examples as basis for your installation
-; You can use $LicenseKey$ var to pass a license key to the installer
-;
-; === Nullsoft Scriptable Install System ================================================================
 %SystemDrive%\tmp\agentWin32.msi /quiet
 
-
 [Sub_check_exitcode]
 comment "Test for installation success via exit code"
 set $ExitCode$ = getLastExitCode