Macro Ending Early - When Using Range.Value on some macros?

For some reason my code is exiting early, and I really have no idea why. I'm triggering the PasteRangeMacro sub via the PasteDay1 sub (among others) and it's really annoying that the macro isn't finishing, among other reasons because the code doesn't re-enable events and reset the calculation status.
It gives the "test0" debug print, and triggers the StartCell.Resize(DayRows,7).Value line, but does not trigger any of the following lines. I use Range.Value in other macros without this problem, so I'm stuck. Any ideas? Thank you so much.

I'm using the latest version of Excel with a file format of .xlsm on a Windows 10 computer.

Sub PasteRangeMacro(StartCell As Range)
    Application.EnableEvents = False
        
    If StoredCopyCell Is Nothing Then GoTo ErrorMessage
    OldCalculationMode = Application.Calculation
    Application.Calculation = xlCalculationManual
    Dim CopyStart As Range
    Set CopyStart = StoredCopyCell
    Debug.Print "test0"
    StartCell.Resize(DayRows, 7).Value = CopyStart.Resize(DayRows, 7).Value
    Debug.Print StartCell.Offset(0, 9).Resize(DayRows, 1).Address
    StartCell.Offset(0, 9).Resize(DayRows, 1).Value = CopyStart.Offset(0, 9).Resize(DayRows, 1).Value
    StartCell.Offset(0, 12).Resize(DayRows, 1).Value = CopyStart.Offset(0, 12).Resize(DayRows, 1).Value
    StartCell.Offset(0, 15).Resize(DayRows, 1).Value = CopyStart.Offset(0, 15).Resize(DayRows, 1).Value
    Debug.Print "test"
    Application.EnableEvents = True
    Application.Calculation = OldCalculationMode
    ActiveSheet.Calculate
    Exit Sub
 
ErrorMessage:
    Application.EnableEvents = True
    MsgBox "Error - Please use a Copy button before pressing a Paste button."
End Sub

Sub PasteDay1()
    Dim StartCell As Range
    Set StartCell = Range("E5")
    Call PasteRangeMacro(StartCell)
End Sub