Hiding "next" button until task completed

Unfortunately, I do not know which version I have, but I do not have any type of audio editing software, either through Lectora or otherwise, and we won't be able to purchase any new software for a while...Unfortunately, I do not know which version I have, but I do not have any type of audio editing software, either through Lectora or otherwise, and we won't be able to purchase any new software for a while...

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