BOB X3 Dashboards - Cannot forward after response has been committed

I am a newbie pls help - apologies if this is the wrong forum!!

BOB Version X3.

I have created some basic dashboards using the Java Infoview webpage and they worked fine until I had a demo arranged with a senior member of staff. When I tried to open the Dashboards in Infoview I get the following error msg;

Cannot forward after response has been committed

Does anyone know how to resolve this issue?

Many thanks.

Max