I searched and found the following thread reporting a bug I am seeing in FM Server 7 Advanced IWP.

http://fmforums.com/forum/showpost.php?post/115665/

It's from a while ago, and the thread did not get a resolution to the problem. The behavior is this:

User in IWP enters find mode (either via the sidebar Find button or by a user defined Find script button). Find mode is entered without issue but the user wants to enter criteria in another layout and uses a button in the layout programmed only with a Go To Layout step. The new layout loads but the fields do not show as active in this layout like in the original when in Find Mode. Clicking in a field on this layout generates the following error (in IE/Safari/Firefox)

Bad Request

The Server could not process your request due to a missing command: "".

Using the sidebar layout change controls, this can be avoided. Is this a known issue/limitation? Is there a script I can put on the layout change controls that can workaround this problem? What is the "missing command" being referred to in the error dialog?

Thanks in advance for any help with this issue.

Assuming the fields on the second layout are from the current table or a related table can you put those fields on the layout?

Alternatively extend the scripting on the button to take more control and go to a specific layout with the fields required.

Well, I can move the fields to the same layout, but it's not the best fix.

As for the scripting, I have made it so it goes to that specific layout. The problem arises when you move to ANY layout but the current one via a script step. You can move layouts via the FM inspector (the left side panel), but I would like to close this off to web users as it allows them more options than I would like.

Is this a known limitation on version 7?

There were many bugs (err.. features that didn't work as they should!) in FM7. Is this v7.03 - there were specific patches for IWP in there.

Can you test your system with the FM9A you have? This might give a clear indication.

It works fine in FM9 - but I didn't really doubt that. I'll see if there are any IWP patches for FM7SA and get back to you.