I have two workbooks that have been set up with the same layout and formating
etc. When I run a macro that contains the following code (see below), pointed
to one workbook, everything runs fine. But when I point to the other
workbook, I get a Run-time error '13': Type mismatch.

Code from macro:
For Each cell In TimeSrcRng
If cell.Value < "" Then
If cell.Value = dtStart And cell.Offset(0, 1).Value <= dtEnd Then
cell1 = cell.Offset(0, -2).Value
Set cell1 = cell1.Offset(1, 0)
End If
End If
Next

The error occures on line:
If cell.Value = dtStart And cell.Offset(0, 1).Value <= dtEnd Then

How can I figure out what's wrong with the second workbook?