VBA open file Has stopped working

Hey folks

I wrote a file comparison script for excel (i know this isn't an excel forum) that opens two files as read only. it worked thing when i was demonstrating tot he staff who will be using it but conveniently stopped working while i was showing the manager. can anyone suggest why this may have happened.

Combobox1 and 2 were filled using

Dim fso As New FileSystemObject       
Dim fld As Folder                    
Dim fil As File   

Set fld = fso.GetFolder("C:\vba excel compare" 

For Each fil In fld.Files           
   ComboBox1.AddItem fil.Name         
   ComboBox2.AddItem fil.Name
next fil

Let Wbook = ComboBox1.Value     'value  "reg 1.xls"
Let Wbook2 = ComboBox2.Value   'value  "reg 2.xls"
Workbooks.Open Filename:=Wbook2, ReadOnly:=True
Workbooks.Open Filename:=Wbook, ReadOnly:=True

i am now getting runtime error 1004

Reg 2.xls could not be found. please check the spelling of the file name and make sure the location is correct

Any help would be appreciated

cheers,

Ollie.

>>Set fld = fso.GetFolder("C:\vba excel compare"

I'd start by adding a trailing parentheses to the above line.

then id check to see that the file names are in your comboboxes