Did you ever get this figured out? I'm experiencing a similar problem on my 2 machine installation, with the added twist that it used to work, and as far as I know nothing has changed, except now it doesn't work. I posted my inquiry today, but based on the age of yours and the fact that there has been no response I'm not too optimistic.
No, I never did. The weird part of the whole thing was I was able to the XML site assistant with no problems, just not the PHP. I upgraded to 10.5 server (fresh install) and FileMaker 10 server and the problem did not reappear. Sorry know this doesn't help.
smartin73 and zombiewoof:
Thank you for your posts.
There were a number of posts that went either "unanswered" or "missing", so I apologize for the late reply.
With FileMaker Server 9, there was a problem reported where the preview site (using PHP) was blank. This appears to have been caused by a blank layout being referenced. When you select layout groups, the blank layout isn't listed but then displays the blank layout. The view is not refreshed until other layouts which has some fields are selected.
This was fixed in FileMaker Server 10.