CrystalDesions.ReportAppServer.CommLayer Invisible to VS 2022

RONALD BEAUMAN 81

I am developing an application using Crystal Reports for VS SP34. When I try to run my application, I get the following message:

DisplayName = CrystalDecisions.ReportAppServer.CommLayer, Version=13.0.4000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304

Commlayer is invisible to the development environment. I have added this library to the global assembly cache, but without positive results. What am I missing?

1 answer

Tianyu Sun-MSFT 31,086 Reputation points Microsoft Vendor

2023-09-07T07:01:05.5133333+00:00

Hello @RONALD BEAUMAN ,

Welcome to Microsoft Q&A forum.

The message seems only indicates the information of the dll file. Does the complete error message indicate that this assembly cannot be loaded or found?

If so, can you confirm that you installed the correct version(mentioned in error message) of the CrystalDecisions.ReportAppServer.CommLayer assembly into the GAC by using the command like gacutil -i xxxxx.dll? If you can confirm, then please try to rebuild and rerun your project.

If the same error appears, please try to install the 32 bit runtime of CR, perhaps your application platform requires 32 bit runtime.

Sincerely,

Tianyu

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RONALD BEAUMAN 81 Reputation points

2023-09-07T20:44:03.34+00:00

I did as you suggested and found that the version of the library matches the version in the error message. The error message follows:

FileNotFoundException: Could not load file or assembly 'CrystalDecisions.ReportAppServer.CommLayer, Version=13.0.4000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' or one of its dependencies. The system cannot find the file specified

I noticed that the GAC configuration shows an AMD64 processor. I'm running on an Intel. Could this cause a problem?

Tianyu Sun-MSFT 31,086 Reputation points Microsoft Vendor

2023-09-08T06:41:37.6533333+00:00

Hi @RONALD BEAUMAN ,

May I know where you downloaded the assembly? And can you confirm that you have both 64bit and 32bit version of runtime of CR installed on your machine?

Besides, will uninstalling and reinstalling the assembly work? Did you use any Nuget packages?

RONALD BEAUMAN 81 Reputation points

2023-09-08T20:38:03.7533333+00:00

The products were downloaded from an e-mail sent by web@sap.com. I have only the 64-bit products installed. Uninstalling and re-installing has been accomplished, which corrected some other problems I had, but not the .CommLayer problem. I checked the GAC entries for my CR libraries, and found that the version numbers are correct, but the GAC shows a processor structure configuration for AMD64. My application is MSIL. Thanks.

RONALD BEAUMAN 81 Reputation points

2023-09-08T20:44:58.4166667+00:00

The CR SP34 products were downloaded from web@sap.com. I have only the 64-bit versions of the product installed. A search of the GAC revealed that the CR libraries processor configuration is AMD64. My application is MSIL. I uninstalled and re-installed CR for VS, which resolved some other problems I was having, but not the .CommLayer issue. I am not using any Nuget packages. Thanks.

Tianyu Sun-MSFT 31,086 Reputation points Microsoft Vendor

2023-09-12T09:47:26.7233333+00:00

Hi @RONALD BEAUMAN ,

Thanks for your confirmation.

I know that 64bit version of the product matches your machine, but sometimes the application platform requires 32bit runtime. Installing 32bit version of the runtime will not affect your system but may fix this issue. if it is possible, I still suggest you try to side-by-side install a 32bit version of the runtime and check if the error disappears.

Kind Regards,

Tianyu

RONALD BEAUMAN 81 Reputation points

2023-09-13T21:14:58.7233333+00:00

I installed the 32-bit runtime, but now I get a different error message:

CrystalDecisions.CrystalReports.Engine.LogOnException: 'Database logon failed.'

I am using a .CSV file as a datasource. What next?

Tianyu Sun-MSFT 31,086 Reputation points Microsoft Vendor

2023-09-15T09:11:59.83+00:00

Hi @RONALD BEAUMAN ,

The error message looks related to logon. Did you set/pass some logon code? If so, you may need to check the connections, make sure that you are passing the logon code to the report correctly.

RONALD BEAUMAN 81 Reputation points

2023-09-17T23:19:32.28+00:00

I have verified that there is no mismatch with a user ID or password. I am using Microsoft's 64-bit text driver. Could that be causing a problem?

Tianyu Sun-MSFT 31,086 Reputation points Microsoft Vendor

2023-09-20T01:59:33.3766667+00:00

Hi @RONALD BEAUMAN ,

As "CrystalDecisions.CrystalReports.Engine.LogOnException: Database logon failed" is a new different error and is more related to the code and the logon(connection), if you can verify that there’s no mismatch with a user ID or password, then please try to post a new thread on SAP Community for further help.

Thanks for your understanding, have a great day.

Kind Regards,

Tianyu
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CrystalDesions.ReportAppServer.CommLayer Invisible to VS 2022

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