this is weird...

I get error after posting now: 

Error: 404 - Topic not found

but the post is actually created, but I see it has its Language  "undefined".

I guess this started happening after I set Show Language Options to "Hide"?? I intentionally removes the Language selector from the Posting options, because we do not allow postings in any but the English language. Shouldn't the new post default to "All" if no language is specified?? I can make the post appear in the category again by editing its language to "All" in the backend...

PS: my version info...