I can't save ANY of my songs now i need help!

[jdm]

It gives this message every time

[Atlas007]

There is possibility that the project got somehow corrupted.

You could try exporting those two tracks (or the MIDI files) and rebuild the project (using a newly created template) after having reset (deleted) Logic's prefs.

[David Nahmani]

Here's a related topic where at least one user solved his issue: viewtopic.php?t=100090

 

Can you try to save the project under a different name, in another location, preferably on a different disk?