The "Product listing for category listing menu 29" and "Hikashop Module" are the title of your modules. There is an option to hide them if you edit the modules.
In old versions of HikaShop, that "display title" option wasn't working properly which is why you didn't see the titles even though the option was active.
Regarding the images, please check your products on the back end ? is the image displayed there ? If not, it's probably because of a problem during the update.
With version 1.4.1, we moved the components/com_hikashop/upload folder where the images are stored to media/com_hikashop/upload. Please check those folders and copy the images from the old to the new if you don't have them in the new folder. That should solve the problem.
Concerning the characteristics issue. That's because you first added one characteristic, then changed the variants and then added another characteristic to the main product. The problem is that the system isn't smart enought to deal with it and don't add automatically the variants. You should go in your product, click on the "manage variants" button, delete the variants, then go back to the product, delete the characteristics and save your product. Then, add the characteristics again and save. That will recreate the variants automatically.