I encountered this problem while building an Excel template: the embedded Excel editor crashes and suddenly I cannot close any NPrinting window anymore because of this annoying "RPC server is unavailable" error.
Luckily, I had saved every single step I had done within my reports, I thought.
Unfortunately, not ONE information was maintained when I had to kill the task to exit NPrinting and start working again.
How am I supposed to use the Save button?
Does it actually save anything inside the many many windows of NPrinting?