Could not load file or assembly

From the error message you posted here I found that your web.config files has the following declaration,

CrystalDecisions.CrystalReports.Engine, Version=13.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304'

Open the bin folder, and check the CrystalReport.dll
1) If there is no such file, you then need to download the CrystalReport.dll and install.
2) If the file already exists in bin file, read further.

You first need to make sure your dlls in the bin directory is updated to the latest version and compatible with the .Net version you are using now.

That is check the dll version and the assembly version defined inside your config file(web.config or machine.config). they both should be the same version.(File version and Assembly version, these two different terms). Well, Your error shows that your application is set to use the CrystalReport Version=13.0.2000.0. So, please make sure the dll file inside the bin file is same version as this assembly version.

Otherwise, you can change the defined assembly to match your dll file in the bin file.

I had the same issue and sorted out this way. Please try above and let me know, if you still get the error