Nested Loop Not Working; Pulls Data From Multiple Files Into One Table

I've got this code that pulls data from multiple files into one table. the file name is in the top row, and each file's title, and two different sums display below that. Then it is supposed to loop through and display each task and the start and end date for that task within each file. After that the first loop brings it to the next column and file. The primary loop works fine, but the inner loop only seems to run once, as I get only the first result for each file. All I can figure is that maybe my row numbers aren't resetting like they're supposed to, or I'm completely overlooking something, which is likely, as VBA is by no means my forte.

Sub Worksheet_Calculate()
Dim sBook As String
On Error Resume Next
Application.EnableEvents = False
Col = 8
' Sets start column
Do
sBook = Cells(2, Col)
' References file name
TaskRow = 6 ........................