How to open project from newer version

This action can cause problems, because V18 writes more different data than v14 can read. So, there is no garanty, that the building has all its element.

Please save a backup copy of the project!

Then you can change every file of the unpacked projekt and overwrite the actual version numbers with the version number, which v14 does write and read.

Probably you can see the building, at least the parts, that v14 can handle.

If the building will crash, or nothing would be visable, you could update to v18 an use the backup file.