VS2019 error when opening project

[MrPike]

Hi AHMI, I am using VS2019 Community and started a fresh project recently.  I added two ModbusTCP drivers to the main form and named one "dvrMasterPLC".  I keep getting the attached error when I open the project.  When I go to the code it looks ok to me and I can simply comment the line out then uncomment it with no other changes and the error goes away.  Any idea what is causing this error?  Thank you

[Archie]

This sounds like a VS quirk.

1) Window-> Close All Tabs
2) Exit VS
3) Re-open solution in VS
4) Rebuild All

If that does not make the error go away, the next thing to do is to a full clean of the solution

[MrPike]

Thanks Archie, it seems if I close all the windows before exiting then reopen the project I do not get the error. 

[Archie]

Here is a setting that will close all of the documents automatically:

https://www.advancedhmi.com/forum/index.php?topic=2445

I have noticed that I no longer get these errors even when having a Design View Open, so MS must have fixed it. I always do the updates for CS. Is VS giving you any notice about a version update?

[MrPike]

Thanks Archie, I made the changes you recommended and so far so good.  VS has not bugged me about any updates so I think it is set to automatically install updates.