Im having the same problem. Just lost three days of work and can not open my file. What am I supposed to do?
Hi mate, you saved the file using the D5 Render 2.4 version, while it stills has the error “the project was created in a lower version”?
Please check whether the file path contains some special or non-English characters, which can cause that problem. If yes, you can move the whole project folder to an English path and the project should be able to open. Sorry for the inconvenience.