.NET trust levels

I am trying to deploy a web application that uses a Fortan module to do some calculations. I am trying to move hosting environments from my current host (http://www.emfcalculator.com) and the new host does not allow 'full trust' for .net assemblies. It appears the Fortan redistributable (ftn95lib.dll) requires full trust as I get this error :

FileLoadException: Could not load file or assembly 'ftn95lib, Version=1.1.0.0, Culture=neutral, PublicKeyToken=626494245e82c014' or one of its dependencies. Failed to grant minimum permission requests. (Exception from HRESULT: 0x80131417)

Is there any way to get around this? My host will not allow increased trust levels.

Have you used 'signing' with your assembly?

Signing the assembly doesn't seem to have helped. The error I am seeing (as above) is calling out the ftn95lib module as having trust issues, and I assume this is already signed anyway (by you guys).

I did some reading and it seems the signing issue would not affect the outcome in this case as the host has a trust level that all dlls must adhere to. Signing only allows dlls to gain higher trust levels if there is a security policy for signed dlls that has more privileges than the policy for unsigned (not the case for me).