"Error opening file for writing:"

[grap3_ap3]

Hello,

I have searched for the answer to this problem and have had NO luck so far. Please forgive me if I have overlooked the solution, but I am officially at a loss and don't understand the breakdown- I'm hoping someone here can shed some light on the problem.

I have created an installer that was working flawlessly. However, I have started working on creating my User Guide which will have screen shots of the install which has me doing a fresh install on my test machine. I get the installer compiled and run it, which starts off fine. The problem comes when it starts writing files to disk. Apparently there is something causing (a breakdown with permissions presumably) because I get the following:

code:
Error opening file for writing:



C:\Program Files\MyCompany\MyApp\settings



Click Abort to stop the installation, 

Retry to try again, or

Ignore to skip this file.

When I skip the file, it gives the same error for the next (and each subsequent file) in the instructions.

HOW can this be overcome? What have I done wrong in building my script? Please help me understand the error, how to overcome it, and how to prevent these problems in the future.

Any input or advice is appreciated.

Here is my file:

code:
; MyApp_installer.nsi

;

; This script is used to install My Application version 1.5.5



;--------------------------------

; includes

; banner

!include "WinMessages.nsh"



; The name of the installer

Name "MyApp 1.5x"



; The file to write

OutFile "myApp1_5_5_setup.exe"



; Define License file

LicenseData "eula.txt"



; The default installation directory

InstallDir $PROGRAMFILES\MyCompany\MyApp



; Registry key to check for directory (so if you install again, it will 

; overwrite the old one automatically)

InstallDirRegKey HKLM "Software\MyApp" "Install_Dir"



; Request application privileges for Windows Vista

RequestExecutionLevel admin



;--------------------------------



; Pages



;!insertmacro MUI_PAGE_LICENSE "eula.txt" 

Page License

Page components

Page directory

Page instfiles



UninstPage uninstConfirm

UninstPage instfiles



;--------------------------------



; The stuff to install

Section "MyApp Binary/Configs" ;No components page, name is not important



  SectionIn RO

  ; Set output path to the installation directory.

  SetOutPath $INSTDIR



 ; Put file there

 File eula.txt

 File settings

 File start_MyApp.bat

 File stop_MyApp.bat

 File MyApp.exe

 File ServiceConfig.exe

 File /r 'MyApp Libs'

 File /r 'ServiceConfig Libs'

 ; Write the uninstall keys for Windows

 WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\MyApp" "DisplayName" "MyApp"

 WriteRegStr HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\MyApp" "UninstallString" '"$INSTDIR\uninstall.exe"'

 WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\MyApp" "NoModify" 1

 WriteRegDWORD HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\MyApp" "NoRepair" 1

 WriteUninstaller "uninstall.exe"



 CreateDirectory "$SMPROGRAMS\MyCompany\MyApp"

 CreateShortCut "$SMPROGRAMS\MyCompany\MyApp\ServiceConfig.lnk" "$INSTDIR\ServiceConfig.exe" "" "$INSTDIR\ServiceConfig.exe" 0

 CreateShortCut "$SMPROGRAMS\MyCompany\MyApp\start_MyApp.lnk" "$INSTDIR\start_MyApp.bat" "" "$INSTDIR\start_MyApp.bat" 0

 CreateShortCut "$SMPROGRAMS\MyCompany\MyApp\stop_MyApp.lnk" "$INSTDIR\stop_MyApp.bat" "" "$INSTDIR\stop_MyApp.bat" 0

 CreateShortCut "$SMPROGRAMS\MyCompany\MyApp\Uninstall.lnk" "$INSTDIR\uninstall.exe" "" "$INSTDIR\uninstall.exe" 0

SectionEnd ; end the section



Section "Install as service"

  nsSCM::Install /NOUNLOAD "MyApp" "MyApp" 16 2 $INSTDIR\MyApp.exe "" "" "" ""

  Pop $0 ; return error/success

SectionEnd



Section "Uninstall"

  ;stop and remove service

  nsSCM::Stop "MyApp"

  nsSCM::Remove "MyApp"



; Remove registry keys

  DeleteRegKey HKLM "Software\Microsoft\Windows\CurrentVersion\Uninstall\MyApp" 

  DeleteRegKey HKLM SOFTWARE\MyApp



; Remove files and uninstaller

 Delete $INSTDIR\uninstall.exe

 Delete $INSTDIR\settings

 Delete $INSTDIR\start_MyApp.bat

 Delete $INSTDIR\stop_MyApp.bat

 Delete $INSTDIR\MyApp.exe

 Delete $INSTDIR\ServiceConfig.exe

 Delete $INSTDIR\eula.txt

 Delete "$INSTDIR\MyApp Libs\*.*"

 Delete "$INSTDIR\ServiceConfig Libs\*.*"



; Remove shortcuts, if any

  Delete "$SMPROGRAMS\MyCompany\MyApp\*.*"



; Remove directories used

  RMDir "$INSTDIR\MyApp Libs\"

  RMDir "$INSTDIR\ServiceConfig Libs\*.*"

  RMDir "$INSTDIR"

  RMDir "$SMPROGRAMS\MyCompany\MyApp\"



SectionEnd



Section "Start MyApp Service"



Exec '"$INSTDIR\start_MyApp.bat"'



SectionEnd

[pengyou]

Did you shut down your application before you tried re-running the installer?

[grap3_ap3]

Indeed I did.

Uninstalled the existing install which stops the service and deletes all the files. I have confirmed that this file does not exist before running the installer.

[MSG]

For one, you need to verify that you have admin access in the .onInit function. Requestexecutionlevel does nothing on older OSes or if UAC is turned off.

[grap3_ap3]

Thanks for the input, I will work on making that change. However, the admin access is only necessary because of creating and running the service AND being allowed to dilate a "privileged" port. The files should all be able to be accessed and written by users so I'm not sure that this change will make much difference in resolving my issue.