In Excel 2007, when I try to plot vertical error bars on a chart with no zero
or negative values it gives me the standard error that "Negative or zero
values cannot be plotted correctly on log charts." Then when it actually
graphs the data there are strange black triangles stretching across the chart
that should not be there. I know that if I uncheck the "logarithmic" box it
will show correctly, but the x-axis needs to be logarithmic for this to work
for what I need.

There is another thread here that I am aware of but the solution that worked
for that person did not work for me, so I am looking to see if someone else
has come up with another option. Just a note, in the 2003 version of Excel,
when there are "Negative or zero" data points it just doesn't show anything
on the chart for them so there are no black triangles. Thanks for your help.