When user tries to use "Tune SQL" from within Performance Analysis (possibly just launching standalone would produce the same error as well), there is an error that states: Font ‘Courier New’ does not support style ‘Regular’.
Missing or corrupted "Courier New" Regular style font (COUR.TTF).
Open notepad and go to Format | Font... and try to select 'Courier New' with style regular. If unable to select it (if "Regular" style doesn't exist) try one of the following solutions:
Resolution 1:
Find Courier New font file from some another computer and paste it to affected computer
The file should be at either C:\winnt\Fonts or C:\Windows\Fonts depending on your version of Windows.
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