Faillure Toast 15

[Otto H.]

Software like Toast 15 and Final cut pro fail to work after installing OS High Sierra. Even the installing dvd of Toast 15 is refused on iMac and Macbook Pro. Toast 15 works perfect under OS Sierra. What is the problem?

Couldn't complete the last command because of a Mac OS Error. Result code = 208

[theoldarchiver]

macOS 10.13 High Sierra requires Final Cut Pro X 10.3.4 or later. Check your versions.

Others do have Toast 15 running on High Sierra, so possibly there is something special about your setup/configuration/state of disk.
When you say “Toast 15 fails”, please describe exactly what fails, when it fails, and which steps you took.
Does the install DVD not read, does the installer fail, or does the installed product fail? Please describe so we don’t have to guess.
What did you do when Result Code -208 appeared? Error -208 corresponds to “badFileFormat”, which e.g. could happen with a corrupt or DRM’ed download of an audio file, which a player/converter/Toast can’t process.