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Trados Studio 2015. Can't open a package or a file through groupshare

I have recently installed SDL Trados Studio 2015 and when I try to open a package or a file through groupshare I get the following messages:

"Error: el servicio solicitado no está disponible. Sdl. Translation Studio Api. Project management. IFiles View Service."

and

" No se pudo cargar un procedimiento importado por "Sdl. Desktop editor. Control dll"  

Can you help me? Thank you