[Building Sakai] Build error with 2.5.4

[Gerwood Stewart]

I have a build error appearing for 2.5.4

It is failing because it can't copy this jar.
[INFO] An Ant BuildException has occured: Warning: Could not find file /apps/sakai/src/sakai-2.5.4/sam/samigo-audio/m2-target/sakai-samigo-audio-2.5.4.jar to copy.

It doesn't look like this JAR is being build to begin with (the build is executing it though).

Has anyone encountered this problem?

Thanks
Gerwood
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