From: Rusty Tucker >> Yep -- v5.5 has a bug with HTTP 1.1, and IE 4 uses HTTP1.1 by default. You either need to turn it off at the client ( not easy to tell your visitors ! ), or upgrade to at least server v5.6 ( free, uses same reg code as v5.5 ). Rusty Tucker Spider Island Software >> Many thanks Rusty and company. This going to 5.6 did indeed fix the problem.