Are there any known compatibility issues with files created in SketchUp 2015 and then used in SketchUp 2016?
I haven’t seen any issues while using it or reports of such. I’ve opened and worked with many models that were made in earlier versions of SketchUp and haven’t seen any problems. This morning I opened one I made in SU6 and it was just fine.
Thanks very much for the reply. I just wanted to check before updating from 2015 to 2016. Thought I had seen an earlier post complaining about compatibility, but maybe it was just operator-error 
There have been some complaints from people who don’t like the fact that SketchUp files are not backward compatible, that is, SU 2015 can not open a file saved as 2016. But I’ve seen no issues with opening a 2015 file in 2016, and you can “save as” 2015 using 2016 to let the older version read your file.
Thanks slbaumgartner, good information.
The post may be about extensions/plugins. Please use the extension warehouse and/or check the extension developers site for the compatible version.
Actually, that would be called forward compatibility, whereby SU 2015 would actually anticipate future changes to the file format before they happen. There is no program that does that, since it would entail either time travel or clairvoyance.
-Gully
Look it up!
Right…but we’re talking about the opposite–a legacy system that can operate using input intended for a newer product or technology, that is, forward compatible.
-Gully
Look again. He asked about using 2015 model files in 2016.
Let’s not quarrel, Steve. I was responding to your statement, which I quoted, not the OP’s. Your statement described the opposite condition from backward compatibility.
-Gully
peace! <mumble mumble to 15>
I am reminded of a favorite passage from The Sirens of Titan, by Kurt Vonnegut, Jr.:
CHRONO-SYNCLASTIC INFUNDIBULA - Just imagine that your Daddy is the smartest man who ever lived on Earth, and he knows everything there is to find out, and he is exactly right about everything, and he can prove he is right about everything. Now imagine another little child on some nice world a million light years away, and that little child’s Daddy is the smartest man who ever lived on that nice world so far away. And he is just as smart and just as right as your Daddy is. Both Daddies are smart, and both Daddies are right.
Only if they ever met each other they would get into a terrible argument, because they wouldn’t agree on anything. Now, you can say that your Daddy is right and the other little child’s Daddy is wrong, but the Universe is an awfully big place. There is room enough for an awful lot of people to be right about things and still not agree.
The reason both Daddies can be right and still get into terrible fights is because there are so many different ways of being right. There are places in the Universe, though, where each Daddy could finally catch on to what the other Daddy was talking about. These places are where all the different kinds of truths fit together as nicely as the parts in your Daddy’s solar watch. We call these places chrono-synclastic infundibula.
Wait, you sayin’ my chrono-synclasts are infundibulized???
Not to be contrary, but I believe that’s “infundibulated,” which means “made to exist in the form of a funnel.”