Blank Xpages being returned after 8.5.1 update

Seem to be getting blank Xpages with no source of any kind after updating from 8.5.0FP1 to 8.5.1. It returns an HTTP 200 but just a blank page. Other none Xpage HTTP sites display fine. Have tried creating a blank database and test xpage from scratch but with no success. Have checked Xpage signers in the server document and looks okay.

Subject: That’s a new one…

I don’t believe I’ve ever seen a error 200 before.

Anyway, what does the server console say on server start? Does the XSP Command Manager start up as expected?

You should see XSP Command Manager initialized on the console.

Subject: RE:

Sorry I mean HTTP code 200, all fine and is okay code.

Can’t see XSP Command starting but if I quit the HTTP task I can see it terminating. Neither can I see it if I load HTTP task again.

Subject: The XSP Command Manager should be starting when the HTTP task starts…

as a first step. This sounds like a install and configuration issue. Anything particular about the un-install and install?