Run-time error 1004 paste method of worksheet class failed

[Castillb]

I'm trying to run a macro but I'm getting the following error message:

Run-time error 1004 paste method of worksheet class failed

When I click debug on the error message window ActiveSheet.Paste is highlighted yellow. Can someone tell me what I may be doing wrong?

Selection.NumberFormat = "#,##0.00_);[Red](#,##0.00)"
    Range("H1").Select
    ActiveSheet.Paste
    Columns("I:I").EntireColumn.AutoFit
    Columns("J:J").EntireColumn.AutoFit