If you are using two different versions of MindNode Classic please note that we sometimes have to introduce a new file format to roll out new features. Unfortunately, these file formats are not supported by older versions of MindNode Classic.

To revert a document to a file format compatible with the older version follow these steps:

1. Please open the document in MindNode
2. Export it as a MindNode document
3. Select the oldest MindNode version you're using in the export window.

On iOS, it is also possible to set the legacy file format as a default in the MindNode settings. To enable that:

1. Please open the MindNode settings,
2. Shake your device,
3. Select “Show Settings” in the dialogue that appears,
4. And then under Document Version choose the one compatible for you.