Buggy Quizzes in Quizmaker

Hi,

I'm pretty new to this so I hope these questions aren't a repeat of other ones!

1. I have built two quizzes in QM, they are banks of 15 questions across 5 groups. When I import them into SL (to make them into blocks for Rise) they tend to get to the third question bank and freeze between questions. Its a bit weird. I have started a new SL file for each one and it has happened again. I rebuilt the QM files and it is still happening. *sad face*

So I am getting a bit frustrated because I don't know what is going wrong :)

A bit more info - they are standard graded questions(multiple choice, drag and drop, true/false), I haven't got anything really fancy like video or animations, and initially in SL they worked perfectly but the client has made a number of changes to the questions as we have progressed and editing the questions seems to start the "buggy" issues. It also starts when I add a retry and remove the review option...

2. Using the sequenced drag and drop template I have found the movable items sometimes "lock" and can't be moved - not sure why this is happening...? I have had the same thing happen with Matching drag and drop... I have attached an image below to show you what I mean :)

Anyway, I hope someone can help! I really don't want to have to start again...