When trying to install Digital Performer, an error message may appear saying that there is not enough room on your hard drive to install the program.
The reason that this is happening is because there is a bug in the VISE installer program that DP uses. If the program sees anything over 60Gb of hard drive space, it creates a negative number in the available space indicator in the installer window.
The way around this is by doing a Custom Install and selecting everything but the “Freemidi” option. Run the installer and then run it again but this time only having the “Freemidi” option selected.