Your error is:
2014-07-07T15:59:03.553+01:00 [05988 info 'Default'] Source path [Z:\DATA\VMs\IBMT61\IBMT61.vmx] is mapped to [\\myditto\DISK1-PUBLic\DATA\VMs\IBMT61\IBMT61.vmx] 2014-07-07T15:59:09.334+01:00 [05988 info 'Default'] Sysimgbase_DiskLib_OpenWithPassPhrase failed with 'The specified virtual disk needs repair' (error code:14) 2014-07-07T15:59:09.334+01:00 [05988 info 'Default'] Error 14 opening disk Z:\DATA\VMs\IBMT61\IBMT61.vmdk.
You need to repair VMDK file and then just to reconfig VM. The repair tool is vmware-vdiskmanager.exe from VDDK tools.
HTH