2014-07-22T09:42:21.588+01:00| vmui| I120: cui::OnLocalHostAbort: Not connected to Workstation Server. Opening VM K:\Virtual Machines\VWEBDEV02ADA.lta.org.uk\VWEBDEV02ADA.lta.org.uk.vmx as a standard VM.
2014-07-22T09:42:21.588+01:00| vmui| I120: VMMgr::OpenVM (cfgPath=K:\Virtual Machines\VWEBDEV02ADA.lta.org.uk\VWEBDEV02ADA.lta.org.uk.vmx)
2014-07-22T09:42:21.600+01:00| vthread-5| I120: VTHREAD initialize thread 5 "vthread-5" host id 3392
2014-07-22T09:42:24.203+01:00| vthread-5| I120: FILE: FileLockWaitForPossession timeout on 'K:\Virtual Machines\VWEBDEV02ADA.lta.org.uk\VWEBDEV02ADA.lta.org.uk.vmx.lck\M45140.lck' due to a local process '5616-130504912711266479(vmware.exe)'
2014-07-22T09:42:24.204+01:00| vthread-5| I120: VMHS_ManageVM failed: ret = The virtual machine appears to be in use
2014-07-22T09:42:24.204+01:00| vthread-5| I120: Cmd /host2/#_client/util/vm/cmd/##7a/op/manageVM/ failed: The virtual machine appears to be in use
2014-07-22T09:42:24.205+01:00| vmui| I120: DlgUI: This virtual machine appears to be in use.
2014-07-22T09:42:24.205+01:00| vmui| I120+ If this virtual machine is not in use, press the "Take Ownership" button to obtain ownership of it. Otherwise, press the "Cancel" button to avoid damaging it.
2014-07-22T09:42:24.205+01:00| vmui| I120+ Configuration file: K:\Virtual Machines\VWEBDEV02ADA.lta.org.uk\VWEBDEV02ADA.lta.org.uk.vmx.
2014-07-22T09:42:31.653+01:00| vmui| I120: DlgUI: Could not open virtual machine: K:\Virtual Machines\VWEBDEV02ADA.lta.org.uk\VWEBDEV02ADA.lta.org.uk.vmx
2014-07-22T09:42:31.653+01:00| vmui| I120+
2014-07-22T09:42:31.653+01:00| vmui| I120+ Taking ownership of this virtual machine failed.
2014-07-22T09:42:31.653+01:00| vmui| I120+ The virtual machine is in use by an application on your host computer.
2014-07-22T09:42:31.653+01:00| vmui| I120+ Configuration file: K:\Virtual Machines\VWEBDEV02ADA.lta.org.uk\VWEBDEV02ADA.lta.org.uk.vmx.
2014-07-22T09:42:31.714+01:00| vmui| I120: VMMgr: Failed to open pending VM: Taking ownership of this virtual machine failed.
2014-07-22T09:42:31.714+01:00| vmui| I120+ The virtual machine is in use by an application on your host computer.
2014-07-22T09:42:31.714+01:00| vmui| I120+ Configuration file: K:\Virtual Machines\VWEBDEV02ADA.lta.org.uk\VWEBDEV02ADA.lta.org.uk.vmx.
What is your local drive K? NAS or external USB drive?
According to this snippet, "The virtual machine appears to be in use". If you are sure that she is not, then delete all LCK-files and -folders and try to restart the VM.