make: vsce: No such file or directory on OSX

[RicardoCampos]

Running make on OSX with the latest version builds ok, but the extension seems to fail.

➜  vscode-mono-debug git:(master) make
git submodule update --init --recursive
cd sdb; make -f Makefile
make[1]: Nothing to be done for `all'.
xbuild /p:Configuration=Release mono-debug.sln
XBuild Engine Version 12.0
Mono, Version 4.0.1.0
Copyright (C) 2005-2013 Various Mono authors

Build started 16/04/2016 08:45:43.
__________________________________________________
Project "/Users/ricardocampos/Code/dotNet/vscode-mono-debug/mono-debug.sln" (default target(s)):
    Target ValidateSolutionConfiguration:
        Building solution configuration "Release|Any CPU".
    Target Build:
        Project "/Users/ricardocampos/Code/dotNet/vscode-mono-debug/mono-debug.csproj" (default target(s)):
            Target RestorePackages:
                Executing: mono --runtime=v4.0.30319 "/Users/ricardocampos/Code/dotNet/vscode-mono-debug/.nuget/NuGet.exe" install "/Users/ricardocampos/Code/dotNet/vscode-mono-debug/packages.config" -source ""   -RequireConsent -solutionDir "/Users/ricardocampos/Code/dotNet/vscode-mono-debug/"
                Restoring NuGet packages...
                To prevent NuGet from downloading packages during build, open the Visual Studio Options dialog, click on the Package Manager node and uncheck 'Allow NuGet to download missing packages'.
            Target PrepareForBuild:
                Configuration: Release Platform: AnyCPU
            Target GenerateSatelliteAssemblies:
            No input files were specified for target GenerateSatelliteAssemblies, skipping.
            Target GenerateTargetFrameworkMonikerAttribute:
            Skipping target "GenerateTargetFrameworkMonikerAttribute" because its outputs are up-to-date.
            Target CoreCompile:
            Skipping target "CoreCompile" because its outputs are up-to-date.
            Target _CopyDeployFilesToOutputDirectoryAlways:
                Copying file from '/Users/ricardocampos/Code/dotNet/vscode-mono-debug/TerminalHelper.scpt' to '/Users/ricardocampos/Code/dotNet/vscode-mono-debug/bin/Release/TerminalHelper.scpt'
        Done building project "/Users/ricardocampos/Code/dotNet/vscode-mono-debug/mono-debug.csproj".
Done building project "/Users/ricardocampos/Code/dotNet/vscode-mono-debug/mono-debug.sln".

Build succeeded.
     0 Warning(s)
     0 Error(s)

Time Elapsed 00:00:00.5858040
vsce package
make: vsce: No such file or directory
make: *** [vsix] Error 1

[weinand]

I've just updated mono-debug to the latest and verified that it builds fine on OS X.