Hi mate, the base .skp object may have changed because it was zipped and unzipped during the data transmission. Therefore, we would suggest you not save or open files in Dropbox directly, but move files to a local place to work first.
Since Dropbox also should have version history function, can you recover the file with that? Please give it a try.
The thing is opening the SAME .drs at home after using it at the office. As soon as I open it at home, it dissapears and I have to reload it. Once I reload it, every configuration dissapears.
The thing is opening it at home.
If the soltion is having to work on local, we will come back to Lumion.