excel vba open file runtime error 424 - vba

Question

Excel 2010 VBA: I'm trying to loop through files in a folder and only open the files with names that contain a certain string. I've done this before and I know the logic works, but I keep getting the 424 error when I'm opening the target files. I'm pretty sure it has something to do with the links and have tried EVERYTHING to turn off those alerts problematically, but I'm still getting the error
Private Sub CommandButton1_Click()
Dim lSecurity As Long
Dim myPath As Variant
lSecurity = Application.AutomationSecurity
Application.AutomationSecurity = msoAutomationSecurityLow
Application.DisplayAlerts = False
Application.AskToUpdateLinks = False
myPath = "F:\Pathname"
Call Recurse(myPath)
Application.AutomationSecurity = lSecurity
Application.DisplayAlerts = True
Application.AskToUpdateLinks = True
End Sub
Function Recurse(sPath As Variant) As String
Dim FSO As New FileSystemObject
Dim myFolder As Folder
Dim myFile As Variant
Dim file As String
Dim A As Workbook
Dim B As Workbook
Dim i As Integer
Dim j As Integer
Dim k As Integer
Dim count As Integer
Set myFolder = FSO.GetFolder(sPath)
Set A = ThisWorkbook
i = 2
For Each myFile In myFolder.Files
If InStr(myFile.Name, "_2015_DOMESTIC_TB") <> 0 Then
Set B = Workbooks.Open(Filename:=myFile)
Call Datadump
B.Close SaveChanges:=False
End If
i = i + 1
Next
End Function
Function Datadump()
A.Cells(i, 1).Value = B.Cells(1, 4).Value
For count = 1 To 59
k = 2
A.Cells(i, k).Value = B.Cells(11 + count, 4).Value
count = count + 1
k = k + 1
Next count
End Function

Answer 1

Seems like your function is trying to open a non Excel file. Change your function to (Untested as posting from phone)
Function Recurse(sPath As Variant) As String
Dim FSO As New FileSystemObject
Dim myFolder As Folder
Dim myFile As Variant
Dim file As String
Dim A As Workbook, B As Workbook
Dim i As Integer, j As Integer, k As Integer, count As Integer
Dim MyAr As Variant
Set myFolder = FSO.GetFolder(sPath)
Set A = ThisWorkbook
i = 2
For Each myFile In myFolder.Files
If InStr(myFile.Name, "_2015_DOMESTIC_TB") <> 0 Then
MyAr = Split(myFile.Name, ".")
If MyAr(UBound(MyAr)) Like "xls*" Then '<~~ Check if it is an Excel file
Set B = Workbooks.Open(Filename:=myFile.Name)
Call Datadump
B.Close SaveChanges:=False
End If
End If
i = i + 1
Next
End Function
This function will check that you are trying to open a valid excel file.
If you still get the error then please tell us which line is giving you the error and what is the value of myFile.Name at the time of error.