Combining data from multiple workbooks into a master - vba

Question

I have been searching forums and just can't work out the issue with my code. I am very new to macros and I'm sure it's something simple, like some variable not being defined, but I can't figure it out.
I am trying to load data from multiple workbooks into a master and really need help please!
Dir for source files: C:\Test Dir\
Dir for Master: C:\Test Dir\Master\
Source filenames differ, but all end in "*FORMATTED.xlsx."
Master filename: "Payroll Master.xlsx"
Source worksheet name = "Loaded Data"
Master worksheet name = "Summary"
All SOURCE data is in A2:J106.
The top row in the source and Master files are column headers and are identical.
I am loading all data into the Master file "Summary" worksheet.
My latest error is: "Run-time error '1004': Select method of Range class failed." on the "Sheets("Loaded Data").Range("A2:J106").Select" line
This is my current code:
Sub combine_data()
'
Dim MyPath As String
Dim SumPath As String
Dim MyName As String
Dim SumName As String
'Dim MyTemplate As Workbook
'Dim SumTemplate As Workbook
MyPath = "C:\Test Dir\"
SumPath = "C:\Test Dir\Master\"
MyTemplate = "*.xlsx" 'Set the template.
SumTemplate = "Payroll MASTER.xlsx"
MyName = Dir(MyPath & MyTemplate) 'Retrieve the first file
SumName = Dir(SumPath & SumTemplate)
Do While MyName <> ""
Workbooks.Open MyPath & MyName
Sheets("Loaded Data").Range("A2:J106").Select
Selection.Copy
Workbooks.Open SumPath & SumName
Sheets("Summary").Select
Range("A65536").End(xlUp).Offset(1, 0).Activate
Selection.PasteSpecial Paste:=xlPasteValues
Workbooks(MyName).Close SaveChanges:=False 'close
Workbooks(SumName).Close SaveChanges:=True
MyName = Dir 'Get next file
Loop
End Sub
Thank you!

Answer 1

To reduce bugs, you should state Option Explicit at the top of the module. You will then be told when using variables that are not declared and you reduce the risk of misspelling the names of variables.
You should put the SumName = Dir(SumPath & SumTemplate) just before the loop, as the Dir at the end of your Do While ... Loop will refer to the LAST Dir that had parameters. When getting past the error with the Select that you describe, you have ran into this problem.
Inside your loop, you should refer to each workbook/worksheet individually, to clarify what you are doing (helping yourself for the future).
You are opening and closing the MASTER file for every source-file. You could open it before the Loop and close it after. This will make your script faster.
Here is the code modified with the above comments:
Option Explicit
Sub combine_data()
'
Dim MyPath As String
Dim SumPath As String
Dim MyName As String
Dim SumName As String
Dim MyTemplate As String
Dim SumTemplate As String
Dim myWS As Worksheet
Dim sumWS As Worksheet
'Define folders and filenames
MyPath = "C:\Test Dir\"
SumPath = "C:\Test Dir\Master\"
MyTemplate = "*.xlsx" 'Set the template.
SumTemplate = "Payroll MASTER.xlsx"
'Open the template file and get the Worksheet to put the data into
SumName = Dir(SumPath & SumTemplate)
Workbooks.Open SumPath & SumName
Set sumWS = ActiveWorkbook.Worksheets("Summary")
'Open each source file, copying the data from each into the template file
MyName = Dir(MyPath & MyTemplate) 'Retrieve the first file
Do While MyName <> ""
'Open the source file and get the worksheet with the data we want.
Workbooks.Open MyPath & MyName
Set myWS = ActiveWorkbook.Worksheets("Loaded Data")
'Copy the data from the source and paste at the end of Summary sheet
myWS.Range("A2:J106").Copy
sumWS.Range("A65536").End(xlUp).Offset(1, 0).PasteSpecial Paste:=xlPasteValues
'Close the current sourcefile and get the next
Workbooks(MyName).Close SaveChanges:=False 'close
MyName = Dir 'Get next file
Loop
'Now all sourcefiles are copied into the Template file. Close and save it
Workbooks(SumName).Close SaveChanges:=True
End Sub