Could not load file or assembly CrystalDecisions.ReportAppServer.ClientDoc

c# asp.net-mvc crystal-reports
Jeremy Holovacs picture Jeremy Holovacs · Apr 3, 2012 · Viewed 126.9k times · Source

I've looked at similar questions on SO, but nothing quite matches my issue as far as I can tell.

The exception message:

Could not load file or assembly 'CrystalDecisions.ReportAppServer.ClientDoc, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' or one of its dependencies. The system cannot find the file specified.

The file is in my GAC. I am developing on a 32 bit machine (Windows 7) running VS2010, everything is .NET4. The target hosting machine is 64-bit Win 2008 R2. My local machine has the CR installation for VS2010; the hosting machine has the 64-bit runtimes for VS2010. I am compiling all my code in "Any CPU" mode for this web application.

It is blowing my mind that it cannot find the file in the GAC. This is an IIS application; is there some sort of permissions issue? I would think IIS would have access to the GAC.

Some suggestions of what to do would be appreciated.

Answer

Jeremy Holovacs picture Jeremy Holovacs · Apr 4, 2012

It turns out the answer was ridiculously simple, but mystifying as to why it was necessary.

In the IIS Manager on the server, I set the application pool for my web application to not allow 32-bit assemblies.

It seems it assumes, on a 64-bit system, that you must want the 32 bit assembly. Bizarre.

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