Your sd card reader does not have the right driver, look in the device manager and its properties and then try updating the driver. If that does not work, do a search on google for a driver, download one and install it.
As I understand it you will keep the entitlement to drive a car that is group B ( a vehicle up to 3500kg gross weight ) you will also keep the E on your licence which will allow you to tow a trailer of up to 3500kg behind your 3500kg car. Nothing changed there. However, if you want to keep the entitlement to drive a vehicle of over 3500kg ( ie a large motor home ) then you will have to say so and will have to have and pay for a medical to assess your fitness to drive at that time and then every three years when you renew your licence.
Nose weight empty is a useless figure, it has no bearing on what the car will be like when everything is loaded. So load the caravan with what you will be taking, put everything into it dedicated place or in the place you would like it to be. Now check the nose weight. If it is too heavy then move the EHU lead from the front locker to the very back of the van, that should make about 10kg difference. Put your awning on the floor about a foot behind the axle, put your water barrels and the like at the back of the van, take things out of the front chest and into a box behind the axle. Do everything you can to lower the nose weight to 75kg, but do not load the boot of the car. If you have a boot full of heavy stuff this will cause what your problem. Things are better off inside the car between the axles, it gives a more even loading. Get the nose weight right and the car loading right your problem will disappear.
I have a Hercules tensioner that I bought in 2003, I would not be without it. It places a limit on the tension you can put on the awning and makes it much easier to hold the pole at that tension whilst you tighten the wing nuts.
There is Dutch manufacturer that makes caravans this shape, I thought it was tab. They make a complete shell out of gps with and produced some wonderful shapes. I will have a think a little more, but it is definitely not a car light. Ago dales were another van that had those windows that you remarked on.
7 seconds at 30mph is 304 feet, so he had at least that distance to do something in, he had every choice. Even slow reactions should be less than half a second so in terms of an accident 7 seconds is so much time that he has no excuse at all. As before the idiot in the car is inexcusable. The speeds were so slow that when he was brought to a halt by running into the car the pair of them stopped within a very few feet.
No driver is on the road to give another his comeuppance, drivers who think they are are dangerous and deserve to be banned. As a driver if you drive as if every other driver is an idiot that you have to avoid you will not go far wrong. Leave the punishment of others to the none existant police presence, if something happens thousands of them crawl out of the woodwork.
Then he should have. Put simply the caravans driver created the situation that could lead to a collision, the HGV driver for sheer bloody mindedness made sure that the collision took place. I was always taught that whilst driving no matter how at fault another driver is it was up to me to make sure that my vehicle did not collide with another. Nothing can excuse the caravan driver, but the HGV driver must be aware of traffic alongside himself, he must be aware that the caravan driver is creating a possible collision, if he refuses to take the simple action that would prevent the collision then no matter what he is guilty of driving without due care and attention and also of reckless driving. Then again the car driver is equally guilty of both offences.
So he accelerated and came to a full stop blocking all the fraffic whilst the accident was cleared instead, nice one. At the speed they were travelling a gentle slow down and a loud horn would have been safer. This is not to excuse the caravan driver there is a sign of a circled hand being pulled down from a forehead that describes his actions.