This is a reoccuring problem. I have about 30 VMs total. Some will randomly disappear from the libary the next time Workstation is started. The ones that do seem to stick around are ones created with 6.5 and 7
It doesn't matter how I add them (drag and drop, file-->open, double-click vmx) or what state they are in (saved or shutdown)
It also doesn't matter if they are new VMs created with 9 or 9.0.1 or from 5.5 through 8.
The VMs are located in subdirs of D:\VMs and E:\VMs.
I have tried making them all favorites also, on the next start of WS, the favorite "star" is gone for all of the VMs.
Host is Win7Ult SP1 x64. I have excluded the VMs folders from my AV program.
This issue did not occur with WS 7 or 8.
This occurs even when I only run one instance of WS.