Error Calling powershell script from batch file in separate directory -

i have following .ps1 unzipping zip file...

param([string]$path) $shell=new-object -com shell.application $location=$shell.namespace($path) $zipfiles = get-childitem *.zip  get-childitem $path -include *.xml -recurse | foreach ($_) {remove-item $_.fullname}  foreach ($zipfile in $zipfiles) {     $zipfile.fullname | out-default     $zipfolder = $shell.namespace($zipfile.fullname)     $location.copyhere($zipfolder.items()) } 

and following run.bat file setting parameter , calling .ps1

 powershell -command "c:\users\eric\unzipfile\unzip3.ps1 -path \"c:\users\eric\unzipfile\"" 

if both in same directory, no error, if move run.bat directory following...

you cannot call method on null-valued expression. @ c:\users\eric\unzipfile\unzip3.ps1:12 char:38 + $location.copyhere($zipfolder.items <<<< ()) + categoryinfo: invalidoperation: (items:string) [], runtimeexception + fullyqualifiederrorid : invokemethodonnull 

you didn't specify in path zip files, looks in current folder. change follow:

$zipfiles = get-childitem -path $path -filter *.zip 

other tip: use -file parameter powershell , add other parameters make easier call

powershell -file "c:\users\eric\unzipfile\unzip3.ps1" -path "c:\users\eric\unzipfile\"