Error on opening RStudio Error: 14:5: unexpected symbol 14: set a


When I open RStudio (Version 1.1.456, R 3.5.1, running on Windows 10) I get an error on startup:

Error: 14:5: unexpected symbol
14: set a

This appears to be harmless. But I often get a similar error on updating packages with the update aborting.
I have no idea what this means. What should I do to correct this error?

Thanks in advance for any help.
Larry Hunsicker

Addendum: This error went away when I uninstalled R, cleaned out the c:\Program Files\R directory, and reinstalled R. Either my original download was corrupted or there was something left over in my R directory that corrupted things.