Unable to cast COM object of type 'CrystalDecisions.ReportAppServer.Controllers.ReportSourceClass'

Question

I have 2 windows program.

Program A : create with visual studio 2015 with crystal report SP18

Program B : create with visual studio 2017 with crystal report

Answer 1

After googling a long time, i found the solution.

The solution is add below code in app.config/web.config

This is the source Crystal Reports, Developer for Visual Studio Downloads