Error: Run time error '13' Type mismatch
If a non-numeric value is entered as a buffer distance in the 'define multiple buffer polygons' panel of the Buffer Wizard, ArcToolbox produces the following error message:
"Run time error '13'
The input buffer distance is not being validated. The tool requires a numeric value as a buffer distance but does not enforce it on the form leading to the type mismatch error.
Solution or Workaround
Make sure only numeric values are entered as buffer distance values on the 'define multiple buffer polygons' panel.