Could not load file or assembly CrystalDecisions ReportAppServer ClientDoc

Question

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

User · Accepted Answer

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.

User · Answer

You simply need to install Crystal Report Report Run Time downloads on Deployment Server  If problem still appears  then place check asp client folder in your project main folder

User · Answer

1  Change your  net profile from Client profile to  to  Net Framework 4 0  http   msdn microsoft com en-us library bb398202 aspx  2  Check your Embed Interop Types flag   http   weblogs asp net cazzu archive 2011 03 11 check-your-embed-interop-types-flag-when-doing-visual-studio-extensibility-work aspx

User · Answer

Regarding the 64-bit system wanting 32-bit support  I don t find it so bizarre   Although deployed to a 64-bit system  this doesn t mean all the referenced assemblies are necessarily 64-bit Crystal Reports assemblies  Further to that  the Crystal Reports assemblies are largely just wrappers to a collection of legacy DLLs upon which they are based  Many 32-bit DLLs are required by the primarily referenced assembly  The error message  can not load the assembly  involves these DLLs as well  To see visually what those are  go to www dependencywalker com and run  Depends  on the assembly in question  directly on that IIS server

[c#] Could not load file or assembly CrystalDecisions.ReportAppServer.ClientDoc

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