Weird error when launching Schrodinger Maestro 8.5 and 9.0

Hi,

have someone experienced the following problem/error?

By launching a windows executable (.exe) file in the isolated Virtual machine from Mac OSX gets the following error message:

"This Mac application cannot be started because your Virtual machine is isolated from from Mac.
To be able to start the application, choose Vitual Machine>Configure from the menu, go to Options>Security, and disable Isolate from Mac Windows."

When the the virtual machine is not isolated by launching a windows executable the Stuffit Mac applications opens but nothing happens in the Windows.

It happens only for executables for Schrodinger Maestro 8.5 and 9 (two different versions) but not for other Windows programs.

Thanks in advance.

MacBook Pro 2.4 GHz Intel Core 2 Duo, 2 GB RAM, Snow Leopard 10.6.3 with Windows XP.