This issue occurs if Easy Install is used to install the OpenSUSE 12.3 virtual machine. Easy Install option fails to install the Linux Kernel headers that are required to compile the vmhgfs and vmci modules. The Shared folders, Copy/Paste, and Drag & Drop functions not work if the vmhgfs and vmci modules are not installed.
Resolution
To resolve this issue, install the kernel source from YaST and then reinstall VMware Tools. This ensures that the missing sources required to compile the vmhgfs and vmci modules are available.
To install the kernel source from YaST and to install VMware Tools:
Start YaST and navigate to Software > Software Management to open the software manager.
Click View > Package Groups > Multiversion Packages to list all packages capable of providing multiple versions.
Select the kernel-source package and click its Version tab located at the bottom left pane.
To install the package, select the option. A green check mark appears, indicating that the package is selected for installation.