I recently updated my Acid Pro 9.0 software by purchasing and downloading Acid Pro 10.0. The newer software version downloaded seamlessly, and the software appears to work correctly when preparing a new .acd file. HOWEVER, I have a great many .acd files that were recorded 1-3 years ago with Acid Pro 9.0., an error is encountered, the file is not opened and instead a small window appears reading as follows: "The following file could not be found in the specified location: C//Users/Dave/Documents/ACID.../I Know Of Them Track 10- 1.wav" But I am not trying to open a .wav file. In the course of opening the selected .acd file, is it necessary to open .wav files? I can understand this, but there is no such folder on my C: drive, and I have not made any changes to my file organization since making the original .acd recording. Please help!