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 o

Answer 1

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.

Answer 2

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

Answer 3

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.

Answer 4

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.