Could not load file or assembly 'CrystalDecisions.ReportAppServer.CommLayer, Version=13.0.2000.0

Question

I have developed a simple project. where i have to print some crystal report. the project runs very well in local machine, but when i up this on a web hosting server, it shows me an error when crystal report viewing.

Could not load file or assembly 'CrystalDecisions.ReportAppServer.CommLayer, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' or one of its dependencies. The system cannot find the file specified. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.IO.FileNotFoundException: Could not load file or assembly 'CrystalDecisions.ReportAppServer.CommLayer, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' or one of its dependencies. The system cannot find the file specified.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Assembly Load Trace: The following information can be helpful to determine why the assembly 'CrystalDecisions.ReportAppServer.CommLayer, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' could not be loaded.

WRN: Assembly binding logging is turned OFF. To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1. Note: There is some performance penalty associated with assembly bind failure logging. To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog].

Please any one can help me .....

Answer 1

I had the same error after moving to a new laptop (Windows 10). In addition to setting Copy Local to true as mentioned above, I had to install the Crystal Reports 32-bit runtime engine for .Net Framework, even though everything else is set to run in a 64-bit environment. Hope that helps.

Answer 2

As I said in comment your crystaldecisions.reportappserver.commlayer.dll is not copied / present on your server. So for this you have to manually copy the dll and paste into you Bin folder

To copy a DLL from visual studio project follow the steps

1.Expand your Project's References hierarchy (Project should not be in debug mod)

2.Right Click on Particular Dll (in your case crystaldecisions.reportappserver.commlayer.dll) and select Properties and set 'Copy Local' attribute to TRUE

3 Build your project. The Dll should be there in your BIN Folder.

Answer 3

I faced the same issue and used the following steps to solve it

1) go Right side in solution explorer
2) Click on your Project Name
3) click on Reference
4) you can see yellow symbol on some DLL
5) Right click on that DLL and go to Property
6) Find Specific Version = True replace it with Specific Version = False

and also change Copy Local = False to Copy Local = True