Note: at least one user has had the following issue:
On making a very large tree (~500 cards), saving to gko file seemed to work, but loading it later didn’t work. All the data was still there in the file (including full version history), but for some reason the pointer to the last version wasn’t stored. So Gingko didn’t know how to build the tree or the history.
I corrected it by finding the last commit and manually adding that pointer. If this happens at all for any of you, please post here, as it’s a very important bug to fix.