Basic excel script: HELP

Question

I want a script to write to excel. But when I start with the basic it won't work.
I'm running this on Win7.
I have looked for hours, and tried diffrend commands, but result is always the same.
Can't write to cell and can't save excel file.
Script:
$xl=New-Object -ComObject Excel.Application
$wb=$xl.Workbooks.Add
$ws=$wb.ActiveWorkbook
$cells=$ws.Cells
$cells.Item(1,1).Value() = 'x' 
#$ws.cells.Item(1,1).Value() = "x" 
$xlWorkbookNormal = -4143 
$wb.SaveAs("H:\xlstest.xlsx", $xlWorkbookNormal )
$wb.close
$xl.quit
Errors:
You cannot call a method on a null-valued expression.
At H:\_Algemeen\_Software\_MijnBeheersScript\excel.ps1:6 char:12
+ $cells.Item <<<< (1,1).Value() = 'x' 
    + CategoryInfo          : InvalidOperation: (Item:String) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull
You cannot call a method on a null-valued expression.
At H:\_Algemeen\_Software\_MijnBeheersScript\excel.ps1:10 char:11
+ $wb.SaveAs <<<< ("H:\xlstest.xlsx", $xlWorkbookNormal )
    + CategoryInfo          : InvalidOperation: (SaveAs:String) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull

Answer 1

Hey Mario,
If I run your script, these are the errors:
GAC    Version        Location                       
True   v2.0.50727     C:\Windows\assembly\GAC_MSIL...
Exception setting "DisplayAlerts": "Unable to cast CO
M object of type 'Microsoft.Office.Interop.Excel.Appl
icationClass' to interface type 'Microsoft.Office.Int
erop.Excel._Application'. This operation failed becau
se the QueryInterface call on the COM component for t
he interface with IID '{000208D5-0000-0000-C000-00000
0000046}' failed due to the following error: Error lo
ading type library/DLL. (Exception from HRESULT: 0x80
029C4A (TYPE_E_CANTLOADLIBRARY))."
At C:\Users\Esther\AppData\Local\Temp\3c953d24-3672-4
c0f-bd8b-6bc7a30b0d23.ps1:6 char:8
+ $Excel. <<<< DisplayAlerts = $false
    + CategoryInfo          : InvalidOperation: (:)  
   [], RuntimeException
    + FullyQualifiedErrorId : PropertyAssignmentExce 
   ption
You cannot call a method on a null-valued expression.
At C:\Users\Esther\AppData\Local\Temp\3c953d24-3672-4
c0f-bd8b-6bc7a30b0d23.ps1:9 char:33
+ $Workbook = $Excel.Workbooks.Add <<<< () 
    + CategoryInfo          : InvalidOperation: (Add 
   :String) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull
You cannot call a method on a null-valued expression.
At C:\Users\Esther\AppData\Local\Temp\3c953d24-3672-4
c0f-bd8b-6bc7a30b0d23.ps1:12 char:39
+ $Worksheet = $Workbook.Worksheets.Item <<<< (1)
    + CategoryInfo          : InvalidOperation: (Ite 
   m:String) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull
You cannot call a method on a null-valued expression.
At C:\Users\Esther\AppData\Local\Temp\3c953d24-3672-4
c0f-bd8b-6bc7a30b0d23.ps1:15 char:18
+ $Excel.Cells.Item <<<< (1,1).Value2 =("UserName")
    + CategoryInfo          : InvalidOperation: (Ite 
   m:String) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull
You cannot call a method on a null-valued expression.
At C:\Users\Esther\AppData\Local\Temp\3c953d24-3672-4
c0f-bd8b-6bc7a30b0d23.ps1:16 char:18
+ $Excel.Cells.Item <<<< (1,2).Value2 = ("Path")
    + CategoryInfo          : InvalidOperation: (Ite 
   m:String) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull
You cannot call a method on a null-valued expression.
At C:\Users\Esther\AppData\Local\Temp\3c953d24-3672-4
c0f-bd8b-6bc7a30b0d23.ps1:17 char:18
+ $Excel.Cells.Item <<<< (1,3).Value2 = ("Date")
    + CategoryInfo          : InvalidOperation: (Ite 
   m:String) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull
The term 'Get-Openfiles' is not recognized as the nam
e of a cmdlet, function, script file, or operable pro
gram. Check the spelling of the name, or if a path wa
s included, verify that the path is correct and try a
gain.
At C:\Users\Esther\AppData\Local\Temp\3c953d24-3672-4
c0f-bd8b-6bc7a30b0d23.ps1:27 char:14
+ Get-Openfiles <<<<  | % { 
    + CategoryInfo          : ObjectNotFound: (Get-O 
   penfiles:String) [], CommandNotFoundException
    + FullyQualifiedErrorId : CommandNotFoundExcepti 
   on
You cannot call a method on a null-valued expression.
At C:\Users\Esther\AppData\Local\Temp\3c953d24-3672-4
c0f-bd8b-6bc7a30b0d23.ps1:41 char:18
+ $Worksheet.SaveAs <<<< ($LogPath)
    + CategoryInfo          : InvalidOperation: (Sav 
   eAs:String) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull
Exception setting "Visible": "Unable to cast COM obje
ct of type 'Microsoft.Office.Interop.Excel.Applicatio
nClass' to interface type 'Microsoft.Office.Interop.E
xcel._Application'. This operation failed because the
 QueryInterface call on the COM component for the int
erface with IID '{000208D5-0000-0000-C000-00000000004
6}' failed due to the following error: Error loading 
type library/DLL. (Exception from HRESULT: 0x80029C4A
 (TYPE_E_CANTLOADLIBRARY))."
At C:\Users\Esther\AppData\Local\Temp\3c953d24-3672-4
c0f-bd8b-6bc7a30b0d23.ps1:44 char:8
+ $Excel. <<<< Visible = $false
    + CategoryInfo          : InvalidOperation: (:)  
   [], RuntimeException
    + FullyQualifiedErrorId : PropertyAssignmentExce 
   ption
You cannot call a method on a null-valued expression.
At C:\Users\Esther\AppData\Local\Temp\3c953d24-3672-4
c0f-bd8b-6bc7a30b0d23.ps1:48 char:28
+ $range.EntireColumn.AutoFit <<<< ()
    + CategoryInfo          : InvalidOperation: (Aut 
   oFit:String) [], RuntimeException
    + FullyQualifiedErrorId : InvokeMethodOnNull
Exception calling "Quit" with "0" argument(s): "Unabl
e to cast COM object of type 'Microsoft.Office.Intero
p.Excel.ApplicationClass' to interface type 'Microsof
t.Office.Interop.Excel._Application'. This operation 
failed because the QueryInterface call on the COM com
ponent for the interface with IID '{000208D5-0000-000
0-C000-000000000046}' failed due to the following err
or: Error loading type library/DLL. (Exception from H
RESULT: 0x80029C4A (TYPE_E_CANTLOADLIBRARY))."
At C:\Users\Esther\AppData\Local\Temp\3c953d24-3672-4
c0f-bd8b-6bc7a30b0d23.ps1:51 char:12
+ $Excel.Quit <<<< () 
    + CategoryInfo          : NotSpecified: (:) [],  
   MethodInvocationException
    + FullyQualifiedErrorId : DotNetMethodException
Some of them like $Excel.Workbooks.Add, I got before, deleting the () at the end got no error