Thanks for looking at this , here is the debug output . i'm running packer 0.75
Pauls-MacBook-Pro:~ paulrmortimer$ PACKER_LOG=debug packer build /Users/paulrmortimer/Desktop/packer/2012/Windows2012.json
2015/03/03 09:54:19 [INFO] Packer version: 0.7.5 9cd66feeacbd9cb318b72eb5ed59428c5b8c37ac+CHANGES
2015/03/03 09:54:19 Packer Target OS/Arch: darwin amd64
2015/03/03 09:54:19 Built with Go Version: go1.3.3
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: amazon-chroot = /usr/local/bin/packer-builder-amazon-chroot
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: amazon-ebs = /usr/local/bin/packer-builder-amazon-ebs
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: amazon-instance = /usr/local/bin/packer-builder-amazon-instance
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: digitalocean = /usr/local/bin/packer-builder-digitalocean
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: docker = /usr/local/bin/packer-builder-docker
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: googlecompute = /usr/local/bin/packer-builder-googlecompute
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: null = /usr/local/bin/packer-builder-null
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: openstack = /usr/local/bin/packer-builder-openstack
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: parallels-iso = /usr/local/bin/packer-builder-parallels-iso
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: parallels-pvm = /usr/local/bin/packer-builder-parallels-pvm
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: qemu = /usr/local/bin/packer-builder-qemu
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: virtualbox-iso = /usr/local/bin/packer-builder-virtualbox-iso
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: virtualbox-ovf = /usr/local/bin/packer-builder-virtualbox-ovf
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: vmware-iso = /usr/local/bin/packer-builder-vmware-iso
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: vmware-vmx = /usr/local/bin/packer-builder-vmware-vmx
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: atlas = /usr/local/bin/packer-post-processor-atlas
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: compress = /usr/local/bin/packer-post-processor-compress
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: docker-import = /usr/local/bin/packer-post-processor-docker-import
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: docker-push = /usr/local/bin/packer-post-processor-docker-push
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: docker-save = /usr/local/bin/packer-post-processor-docker-save
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: docker-tag = /usr/local/bin/packer-post-processor-docker-tag
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: vagrant = /usr/local/bin/packer-post-processor-vagrant
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: vagrant-cloud = /usr/local/bin/packer-post-processor-vagrant-cloud
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: vsphere = /usr/local/bin/packer-post-processor-vsphere
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: ansible-local = /usr/local/bin/packer-provisioner-ansible-local
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: chef-client = /usr/local/bin/packer-provisioner-chef-client
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: chef-solo = /usr/local/bin/packer-provisioner-chef-solo
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: file = /usr/local/bin/packer-provisioner-file
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: puppet-masterless = /usr/local/bin/packer-provisioner-puppet-masterless
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: puppet-server = /usr/local/bin/packer-provisioner-puppet-server
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: salt-masterless = /usr/local/bin/packer-provisioner-salt-masterless
2015/03/03 09:54:19 [DEBUG] Discoverd plugin: shell = /usr/local/bin/packer-provisioner-shell
2015/03/03 09:54:19 Detected home directory from env var: /Users/paulrmortimer
2015/03/03 09:54:19 Detected home directory from env var: /Users/paulrmortimer
2015/03/03 09:54:19 Attempting to open config file: /Users/paulrmortimer/.packerconfig
2015/03/03 09:54:19 File doesn't exist, but doesn't need to. Ignoring.
2015/03/03 09:54:19 Packer config: &{DisableCheckpoint:false DisableCheckpointSignature:false PluginMinPort:10000 PluginMaxPort:25000 Builders:map[digitalocean:/usr/local/bin/packer-builder-digitalocean null:/usr/local/bin/packer-builder-null virtualbox-iso:/usr/local/bin/packer-builder-virtualbox-iso vmware-iso:/usr/local/bin/packer-builder-vmware-iso virtualbox-ovf:/usr/local/bin/packer-builder-virtualbox-ovf googlecompute:/usr/local/bin/packer-builder-googlecompute openstack:/usr/local/bin/packer-builder-openstack parallels-iso:/usr/local/bin/packer-builder-parallels-iso parallels-pvm:/usr/local/bin/packer-builder-parallels-pvm amazon-chroot:/usr/local/bin/packer-builder-amazon-chroot amazon-ebs:/usr/local/bin/packer-builder-amazon-ebs amazon-instance:/usr/local/bin/packer-builder-amazon-instance docker:/usr/local/bin/packer-builder-docker qemu:/usr/local/bin/packer-builder-qemu vmware-vmx:/usr/local/bin/packer-builder-vmware-vmx] PostProcessors:map[compress:/usr/local/bin/packer-post-processor-compress docker-import:/usr/local/bin/packer-post-processor-docker-import docker-push:/usr/local/bin/packer-post-processor-docker-push atlas:/usr/local/bin/packer-post-processor-atlas docker-save:/usr/local/bin/packer-post-processor-docker-save docker-tag:/usr/local/bin/packer-post-processor-docker-tag vagrant:/usr/local/bin/packer-post-processor-vagrant vagrant-cloud:/usr/local/bin/packer-post-processor-vagrant-cloud vsphere:/usr/local/bin/packer-post-processor-vsphere] Provisioners:map[chef-client:/usr/local/bin/packer-provisioner-chef-client chef-solo:/usr/local/bin/packer-provisioner-chef-solo file:/usr/local/bin/packer-provisioner-file puppet-masterless:/usr/local/bin/packer-provisioner-puppet-masterless puppet-server:/usr/local/bin/packer-provisioner-puppet-server salt-masterless:/usr/local/bin/packer-provisioner-salt-masterless shell:/usr/local/bin/packer-provisioner-shell ansible-local:/usr/local/bin/packer-provisioner-ansible-local]}
2015/03/03 09:54:19 Setting cache directory: /Users/paulrmortimer/packer_cache
2015/03/03 09:54:19 Detected home directory from env var: /Users/paulrmortimer
2015/03/03 09:54:19 Reading template: /Users/paulrmortimer/Desktop/packer/2012/Windows2012.json
2015/03/03 09:54:19 Creating build: vmware-vmx
2015/03/03 09:54:19 Loading builder: vmware-vmx
2015/03/03 09:54:19 Creating plugin client for path: /usr/local/bin/packer-builder-vmware-vmx
2015/03/03 09:54:19 Starting plugin: /usr/local/bin/packer-builder-vmware-vmx []string{"/usr/local/bin/packer-builder-vmware-vmx"}
2015/03/03 09:54:19 Waiting for RPC address for: /usr/local/bin/packer-builder-vmware-vmx
2015/03/03 09:54:19 packer-builder-vmware-vmx: 2015/03/03 09:54:19 Plugin minimum port: 10000
2015/03/03 09:54:19 packer-builder-vmware-vmx: 2015/03/03 09:54:19 Plugin maximum port: 25000
2015/03/03 09:54:19 packer-builder-vmware-vmx: 2015/03/03 09:54:19 Plugin address: unix /var/folders/f4/s7q76q6s379c9pcnxm3bhhs40000gn/T/packer-plugin115352296
2015/03/03 09:54:19 packer-builder-vmware-vmx: 2015/03/03 09:54:19 Waiting for connection...
2015/03/03 09:54:19 packer-builder-vmware-vmx: 2015/03/03 09:54:19 Serving a plugin connection...
2015/03/03 09:54:19 ui: vmware-vmx output will be in this color.
2015/03/03 09:54:19 ui:
2015/03/03 09:54:19 Build debug mode: false
2015/03/03 09:54:19 Force build: false
2015/03/03 09:54:19 Preparing build: vmware-vmx
vmware-vmx output will be in this color.
2015/03/03 09:54:19 Waiting on builds to complete...
2015/03/03 09:54:19 Starting build run: vmware-vmx
2015/03/03 09:54:19 Running builder: vmware-vmx
2015/03/03 09:54:20 packer-builder-vmware-vmx: 2015/03/03 09:54:20 Detected VMware version: 6
2015/03/03 09:54:20 packer-builder-vmware-vmx: 2015/03/03 09:54:20 No floppy files specified. Floppy disk will not be made.
==> vmware-vmx: Cloning source VM...
2015/03/03 09:54:20 ui: ==> vmware-vmx: Cloning source VM...
2015/03/03 09:54:20 packer-builder-vmware-vmx: 2015/03/03 09:54:20 Cloning from: /Users/paulrmortimer/Desktop/packer/2012/WindowsServer2012.vmwarevm
2015/03/03 09:54:20 packer-builder-vmware-vmx: 2015/03/03 09:54:20 Cloning to: output-vmware-vmx/packer-vmware-vmx-1425336859.vmx
2015/03/03 09:54:20 packer-builder-vmware-vmx: 2015/03/03 09:54:20 Executing: /Applications/VMware Fusion.app/Contents/Library/vmrun [-T fusion clone /Users/paulrmortimer/Desktop/packer/2012/WindowsServer2012.vmwarevm output-vmware-vmx/packer-vmware-vmx-1425336859.vmx full]
2015/03/03 09:54:20 packer-builder-vmware-vmx: 2015/03/03 09:54:20 stdout: Error: One of the parameters was invalid
2015/03/03 09:54:20 packer-builder-vmware-vmx: 2015/03/03 09:54:20 stderr:
2015/03/03 09:54:20 ui: ==> vmware-vmx: Deleting output directory...
==> vmware-vmx: Deleting output directory...
2015/03/03 09:54:20 ui error: Build 'vmware-vmx' errored: Clone is not supported with your version of Fusion. Packer only works with Fusion 6 Professional or above. Please verify your version.
2015/03/03 09:54:20 Builds completed. Waiting on interrupt barrier...
2015/03/03 09:54:20 machine readable: error-count []string{"1"}
2015/03/03 09:54:20 ui error:
==> Some builds didn't complete successfully and had errors:
2015/03/03 09:54:20 machine readable: vmware-vmx,error []string{"Clone is not supported with your version of Fusion. Packer only works with Fusion 6 Professional or above. Please verify your version."}
2015/03/03 09:54:20 ui error: --> vmware-vmx: Clone is not supported with your version of Fusion. Packer only works with Fusion 6 Professional or above. Please verify your version.
2015/03/03 09:54:20 ui:
==> Builds finished but no artifacts were created.
2015/03/03 09:54:20 waiting for all plugin processes to complete...