Can you please export and attach your sample survey for testing?!

So, is this question set on a timer, but also marked as mandatory? The reason I ask is that the two should really be exclusionary. If you set a question on a timer, then it has to be disabled once the timer is complete, otherwise what's the point of the timer? But if you make it mandatory as well, then you tell LimeSurvey that it shouldn't proceed without having an answer. But that means that you don't want to lock out users after a certain time has expired, in which case the timer is kind of pointless.

Now, I think this is why I was putting a space into empty texts with a timer, so that a mandatory question left unanswered would contain something and therefore override any mandatory requirement - which is a cause of another bug I saw recently, where someone was complaining about the space left behind with unanswered timer questions.

I think I've probably fixed this bug - there was a bug where if the "Prev" button was turned off for a survey, the timer script breaks. That would cause all javascript in the page to stop working - validation and all, so I'm going to assume this resolves it.

1.91RC5 released.