Sketches using the new "Plane" guide won't open in earlier versions about open-brush

[andybak]

The best solution I can think of would be to keep the legacy data structure for guides in the saved tilt file but add a new more future proof one that can handle new guide types without choking. Older versions of the app would use the legacy data.

[andybak]

There is a simple workaround (remove the plane guide and resave)

And not many people are opening sketches in older versions of the app.

Therefore I think this is probably low priority.

One user reported their reasons for wanting to open sketches in older versions and it's quite interesting:

Some authors consider the movie to be the finished product, while others aim to create a field such as Cluster.
I am very particular about having my work viewed in VR.
Not everyone who views my work uses OpenBrush, and I want TiltBrush users to be able to view my work as well, so I make sure it can be loaded either way.

https://discord.com/channels/783806589991780412/784197548918177842/950710620049780757