Error creating a connection to eikon (MATLAB R2015a)

When i try to access to Eikon dll by means of the following code:

c=treikon

i get the following error message (in italian):

Error using treikon (line 86) Message: Impossibile caricare il file o l'assembly 'file:///C:\Program Files (x86)\Thomson Reuters\Eikon\Y\Bin\Interop.EikonDesktopDataAPI.dll' o una delle relative dipendenze. Tentativo di caricare un programma con un formato non corretto. Source: mscorlib HelpLink:

could you please help me?

Alfonso

[Maximilian]

I got the same problem:

    Error using treikon (line 78)
Message: Could not load file or assembly 'file:///C:\Program Files\Thomson
Reuters\Eikon\4.0.10490\Bin\Interop.EikonDesktopDataAPI.dll' or one of its
dependencies. The system cannot find the file specified.

Thx for your help