Determine why basic syntax errors out in Excel 2013

I get a Run-Time Error 32809 on code written in Excel 2010 and now executed in 2013 when it hits the line Sheets("New Data").select . Unbelievable huh ?? "Application-defined or object-defined error" . The syntax is perfect and has never error'd before. Does anyone have any idea why this code suddenly stops working ??

Try replacing with

Code:

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Application.GOTO worksheets("New Data").Cells(1)

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I have had this error in the past as well using:

Code:

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Sheets("RawData").Activate
'AND
Sheets("RawData").Select

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Would it always be preferable to use the above method?

Code:

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Application.GOTO worksheets("New Data").Cells(1)

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Are there specific times when each one of these is better suited? Is one more efficient then the other?