Critical Error on Windows 2003 Server

Hi there,
This Critical Error appears on my Windows Server 2003 from Virtual Box. The program worked just fine until now and I don’t know what it appeared because I didn’t make any system and program settings changes. Does any have any idea about this error ? What is the solution for my error ?
Regards experts !

VirtualBox – Error Critico
Fallo al cargar la configuracion global GUI (interfaz usuario) de VirtualBox desde.
La application terminara ahora.
Detailles
Receptor RC: e_outofmemory (0x8007000E)
