Problems with assembly security

[Marc]

Hi Folks,

I'm using a third-party module in my apllication to create PDFs.
Most time the DDL works fine, but sometime I got the following error
message:

=== Pre-bind state information ===
LOG: DisplayName = Interop.ASPPDFLib
(Partial)
LOG: Appbase = file:///C:/wwwroot/mfr_web/pdftest
LOG: Initial PrivatePath = bin
Calling assembly : (Unknown).
===

LOG: Policy not being applied to reference at this time (private,
custom, partial, or location-based assembly bind).
LOG: Post-policy reference: Interop.ASPPDFLib
LOG: Attempting download of new URL
file:///C:/WINDOWS/Microsoft.NET/Framework/v1.1.4322/Temporary ASP.NET
Files/pdftest/e5fc5209/2ec90bc0/Interop.ASPPDFLib.DLL.
LOG: Attempting download of new URL
file:///C:/WINDOWS/Microsoft.NET/Framework/v1.1.4322/Temporary ASP.NET
Files/pdftest/e5fc5209/2ec90bc0/Interop.ASPPDFLib/Interop.ASPPDFLib.DLL.
LOG: Attempting download of new URL
file:///C:/wwwroot/mfr_web/pdftest/bin/Interop.ASPPDFLib.DLL.
LOG: Policy not being applied to reference at this time (private,
custom, partial, or location-based assembly bind).
LOG: Post-policy reference: Interop.ASPPDFLib, Version=1.0.0.0,
Culture=neutral, PublicKeyToken=null

Someone know want went wrong?

THX,

Marc