Problem with compilation

Question

I need help! There is the source text of the finished program written in C # version 14.0.25420.1. I'm trying to compile in Visual Studio version 15.3.2. The compiler produces an error -

Severity Code Description Project File Line Suppression State
Error The "DllExportAppDomainIsolatedTask" task failed unexpectedly.
System.ArgumentException: Requested value 'Version46' was not found.

Server stack trace:
at System.Enum.EnumResult.SetFailure(ParseFailureKind failure, String failureMessageID, ...

Answer 1

what mean IDE?