Thank you! I'm new to all this stuff and was surprised when skse just stopped launching today with that version mismatch error. For those of you who are 100% new like me and have never used the steam console, here's brief directions: 1. Type steam://nav/console into your web browser. This will bring up the console in the Steam client app. 2. Type the command above, "download_depot 489830 489833 7780040377772731640" into the console window. 3. Steam will tell you where it placed the files, "C:\Program Files (x86)\Steam\steamapps\content\app_489830\depot_489833" in my case. I went to that directory saw there was a new (or rather, old) SkyrimSE.exe. I copied that to the directory where Steam normally runs from. I renamed the old exe just to be safe. 4. Played skyrim again! #winning!