Problem with charts on report

[Tales Costa]

Hi,

I am having some problems for displaying  pie and bar charts on 
Reports.  In short, gnucash doesn't display any of the bar-chart or 
pie-chart graphics on the reports available. Instead display the 
following messages: "unable to push bar-chart"  and  "unable to display 
pie-chart".

Have searched for reference/answer on the list archives nor bugzilla but 
haven't found much.  I am using Gnucash 1.8.5 that comes with Suse 9.0.

Maybe someone here can help me on this ?

Thank you

Tales Costa