Subreport link problem in Firefox

Hello, when I want to open a subreport within a CDE dashboard in Firefox, not shown and the following appears:
error-subreporte.jpg

This happens when I view in HTML, but if I view it as a PDF works correctly.
Some have no idea what may be going on?.
I'm using the biserver 4.8 in Ubuntu 12.04, and Firefox 22.0

Thank you very much. regards

Marcos

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