FXSAPIDebuglogfile.txt What is it & and why it doesn't get deleted?

Last few nights were my sleepless nights as I couldn't either uninstall vmware player 4.0.2 version or install vmware player 4.0.4 version.  I had to get rid of this FXSAPIDebuglogfile.txt file but I kept getting message saying its been used by another program.

finally, I found the solution :

1. Go to control panel click Programs \ Turn windows features on or off.

2. Scroll down the list and unchecked the box next to Print and Document Services so its not highlighted.

3. Click ok and restart your machine.

That file will go away after the restart. 

But what is that file for? It's a log file that is associated with the fax application that you use. 

Ref: Microsoft Answers Forum

Restarting a suspended Virtual Machine

Today I  tried to start suspended windows server 2008 Virtual Machine from another host machine.
VM didn't want to work;

"The virtual machine you are attempting to restore is using the FFXSR CPU feature, but your host does not support it.  An error occurred while restoring the virtual machine state from file "G:\virtual machines\windows server\windows server 2008 R2 X 64-6db70672.vmss".

Solution: Close Vmware workstation.  Locate the virtual machine's folder.  Delete the .vmss, .lck, and .nvram files.

Ref: Vmware KB.

Virtual machine cannot open .vmdk file

The other day my host machine crashed and when I tried to load Windows Server 2008 Virtual Machine from another computer an error message came up on the screen.
"Cannot open the disk 'G:\VirtualMachines\Windows Server\Windows server 2008 R2 x64.vmdk' or one of the snapshot disks it depends on.
Reason: Failed to lock the file.

Didn't realize it's gonna be so easy to fix.

I just delete the .Lck folder within my Windows Server 2008 virtual machine folder and after this without any problem my VM worked fine.