Error: can not open file

I was editing last week and I wanted to continue editing but now I cannot open my file anymore. I remember that I renamed the file, what’s going wrong?
The error: “couldn’t load file: [file direction]”.

Hours of editing is done, so I realy hope you have some suggestions!

Windows XP? Rename the file back.

The file name is critical and the filename.aup must match exactly and be in the same directory as the filename_data directory, which name is also specified within the filename.aup file itself.

Thanks so much jademan! I found what was the previous name, changed it en I could open it again​:pray::clap::boom: