Having only found out that 4.3.12 was available to download, to find that it couldn't access the internet (when I had a perfectly fine connection) and said in "About" it was Version 4.3.11, I was pretty disappointed about that. On the other hand, I did contact Lego about this and am currently waiting for a response myself, while I went back to 4.3.11 after keeping a Compressed Folder I downloaded back in June. It seems as though it may only be resolving the issue which didn't allow Windows users to install LDD using Version 1809, as I had no troubles installing this update...