ppsgr81, I don't think your problem has anything to do with the 4.3 HDT Content addon. This thread isn't the right place to ask for help with your problem.
That said, if you would like your issue resolved quickly and simply it would be best to first troubleshoot it yourself by reinstalling the pack, starting a new game and checking if the crash still happens. Or if you've already done this, that'd be helpful to mention in your post.
Ah, I've just looked around and you're the last poster in a lot of topics right now. In fact, you've already posted this exact help request in the Troubleshooting Tips thread. Copying and resubmitting your posts in unrelated threads is what I call spamming, I've never used a forum where that's appropriate, and chasing someone around demanding endless assistance with issues that only you seem to be experiencing is likely to get you ignored.
Help comes to those who help themselves, I would suggest considering what you might have done while installing or using the pack that others haven't and then starting over without, or at least mention any setup abnormalities while you're asking for help. (in a new thread of course) When you have questions to ask please try to keep in mind that what you're using is free and nobody here is under any obligation to answer you, etiquette matters.