Trying to open song file
Error message - wrong or old file type
How can I retrieve the files - there was alot in the song file & so much work had gone into it, don’t want to have to do it all again 
What type of file are you trying to load (i.e. file extension)? With which version of n-Track was the file saved and on what operating system, and which version and which operating system are you using now?
If it’s an sng file you can try emailing it to support@ntrack.com so that we can take a look at it.
n-Track can usually load even .sng files saved with very old versions (10+ years).
Flavio.