return 0; in chart:valueForIndex:set: breaks Firefox

[meelash]

steps to reproduce:

In LPKit-Examples add return 0; to the first line of the chart:valueForIndex:set: data source method.

Load in Safari- works fine
Load in Firefox - graphics load but clicking to switch to slide view and other features break.

This does not seem to occur if one of the values is 0! Very strange... (and took me 3 days to figure out ;))

[meelash]

If all the values are 0, the problem exists as well.

So I guess it has to do with calculating the scale of the chart.