Problems with dotnet component call

Hi,

Im calling a dll NET with the de CF Component but when I calling displays this error in the production server where is a Hosting provider. When I run it from my Pc, It runs perfectly

java.security.PrivilegedActionException: coldfusion.runtime.dotnet.ProxyGenerationException

12 :      type="dotnet"  13 :      class="EncryiptDescrypt.Cryptoryng.EncripDesencrip"  14 :      assembly="#expandPath('.\utileria\Encryptacion.dll')#"  15 :      />  

THis is my code

<!------>

<cfobject

name="Cypert"

type="dotnet"

class="EncryiptDescrypt.Cryptoryng.EncripDesencrip"

assembly="#expandPath('.\utileria\Encryptacion.dll')#"

/>

Somebody has fixed this error? Could you help me?

regards

Moises