use on/with commands stopped working

Hi.
I've been working on a game (I was planning on sharing it)
But nearing completion, the ''Use (item) with (another item) commands stopped working!

For instance: If I type ''Use spatula with fuse'', I just get the reply ''I can't see that here'',
while both items are visible and viewable.

It worked fine before, what could I have done to screw up?
I'd hate to start over, since this took me all friggin' day!

I tried using the commands again, they're still broken.
Tried creating a different game, commands worked...

It's just that one game that has the bug.
What could I have done to create the bug?

Is it a maxed out library?
I tried removing an object, but ''Use (on its own)'' and ''Use (on anything)'' still don't work.

I'd really like to know how to fix it...

Can you please email me your ASL file to alex@axeuk.com or alternatively attach it to a forum post (using "Upload attachment" underneath the Save/Preview/Submit buttons)?

Email sent.

I've worked around the problem by adding ''use'' verbs to the object.
I'm sure this is not the correct way to fix it.

See the ''finished'' work here:
http://www.textadventures.co.uk/review.php?game=339