I'm currently getting the following error when I try to compile/build:

The "MicroFocus.Cobol.BuildTasks.AssignSourceTargetPaths" task could not be loaded from the assembly C:\\Program Files (x86)\\Microsoft Visual Studio\\2019\\Enterprise\\MSBuild\\Micro Focus\\Visual COBOL\\v1.0\\MicroFocus.COBOL.BuildTasks.dll. Method 'get_SourceFileExtension' in type 'MicroFocus.COBOL.BuildTasks.CreateCobolManifestResourceName' from assembly 'MicroFocus.COBOL.BuildTasks, Version=16.0.0.0, Culture=neutral, PublicKeyToken=0412c5e0b2aaa8f0' does not have an implementation. Confirm that the <UsingTask> declaration is correct, that the assembly and all its dependencies are available, and that the task contains a public class that implements Microsoft.Build.Framework.ITask.

Under what OS are you running?
Was this working fine at one point and then the error started to occur?
Does this happen on all programs or just specific ones.

You might want to try to repair Visual COBOL from Control Panel-->Programs and Features.

Visual COBOL V5.0 is over 3 years old. There are currently  24 Patch Updates for V5.0.

If you have a current maintenance contract with Micro Focus, these Patch Updates are available from the Micro Focus Support Portal under downloads.

Hi Chris,

I'm running under Windows.  Everything was working fine on my old laptop. However when I installed Visual COBOL v5.0 I also needed to apply patch 2 to fix the build/compile errors.

I managed to locate and apply the patch and the build/compiles are now working ok.

Thanks