Hi,

The first step in the package checks that the file exists using Visual Basic:

Dim FileInfo As FileInfo

' Fill fileInfo variable with file information

FileInfo = New FileInfo(Dts.Variables("User::strWestpacFileLocation").Value.ToString())

'Check if file exists

Dts.Variables("User::bFileExists").Value = FileInfo.Exists

Dts.TaskResult = ScriptResults.Success

I would not think that this would lock the file as it seem to be accepted as the best method of checking that the file exists...