This has been an issue for me for ages in SugarCRM. If I send am email in a newsletter campaign and there are more than 20 previous sends, it shows me 20 and then gives me buttons to go to the next group or to the end. Neither of these buttons will ever work. I have tried this yet again with the new 5.5 release. Still no go. Does no one else ever have more than 20 sends in a newsletter? The only way I can send anything new, is to delete enough of my old sends so that the new send will show up on the first page.