R installation error caused by a bogus file.

I receive the following error whenever I restart R and reload R onto my computer:

Error: object 'CF.mb' not found
[R.app GUI 1.70 (7463) x86_64-apple-darwin15.6.0]

The object 'CF.mb? file is a bogus file. In actually, it does not and should not exist and R should not attempting to load it.

I suspect that I created it by mistake when I worked with RStudio in creating a R package called ?CF?. Most likely I typed ?CF.mb" instead of ?CF.md.? The extension ?.md? makes sense. It is extension for a Markdown file. ?.mb? stands for some animation program extension, which I am not using. 

QUESTION: How do I stop R from looking for this object?

Apparently, R has saved a call to the 'CF.mb?  file somewhere in its memory. My guess if I erase this call, I will be running R the way it is designed.

Thanks,

Paul