SendPage returns plain text

[Upayavira <uv...@upaya.co.uk>]

I've started attempting to convert the Authorisation-fw to use flow. But 
I'm finding, as was mentioned on the user list recently, that when a 
page is generated using sendPage(), the page returns as test/plain, not 
text/html.

This is happening with both my own flow pages and also for the flow 
samples (e.g. calculator).

Does anyone have any idea what is going on?

Regards, Upayavira