I have installed iSilo in an Archos 70 IT. I am not able to change the font size of a document.

Once opened the document, I press: Menu -> Edit -> Options -> Font

Here I can select a different font size. OK. And I go back to the Options menu. But when I try to go back from the Options menu to the Edit one, iSilo is closed and, obviously, the font size has not changed.

Could anybody help me?