error messages for .rprofile issues

[ethanbsmith]

I ran into an issue with a syntax error in my .rprofile file. This issue only materializes when starting a new VS session. if the VS session starts fine and the a subsequent syntax error is introduced into .rprofile , resetting the r session from within VS works fine.

the error given is:

Connecting to R Workspace failed.
Reason: HTTP error while creating session on the machine 'Microsoft R Open (3.5.1.0)'. Exception: The remote server returned an error: (404) Not Found.
Interactive Window is disconnected from R session.
Open Workspaces window and either select local R interpreter or try connecting to a remote machine.

further, resetting the r session after this error does not work, even after the syntax error is fixed. the only workaround is to restart VS. MROpen works fine and gives an informative syntax error.