build identifier: m20090917-0800

reports usualy contain default "style" tags in their xml code. one of them is about the report, its code in the default templates usually is :

<style name="report" id="4">
      <property name="fontfamily">sans-serif</property>
      <property name="fontsize">10pt</property>
</style>

if you remove this tag, then you won't be able to create charts : the preview will be displayed as blank, and even if you set it anyway, the final result will be blank.

reproducible: always

steps to reproduce:
1. create a blank report
2. try to create a chart, you should see the preview as soon as you select a chart type (you don't need to create it).
3. go in the report xml code and remove the tag "<style name="report" ...>...</style>"
4. try to create a chart again, the preview should remain blank, whatever you do.
problem specific to internal workspace, i was unable to reproduce the bug in a neutral environment (a test project).