Errors in R console

I've recently upgraded to a new MBP (2015 series) and migrated my old machine via a time machine backup. Since the upgrade, I have been receiving error messages in the console of R at more or less random intervals. The warnings usually appear when I start the R.app, occasionally when I switch from another app (like TextMate) back to R.app, and then even more occasionally just on random. The messages typically look like this: > 2016-12-12 10:35:18.696 R[2635:12228] IMKInputSession presentFunctionRowItemTextInputViewWithEndpoint:completionHandler: : *NO* NSRemoteViewController to client, NSError=Error Domain=NSCocoaErrorDomain Code=4099 "The connection from pid 0 was invalidated from this process." UserInfo={NSDebugDescription=The connection from pid 0 was invalidated from this process.}, com.apple.inputmethod.EmojiFunctionRowItem or this: > 2016-12-06 15:05:02.067 R[87426:4480089] IMKClient Stall detected, please Report your user scenario attaching a spindump (or sysdiagnose) that captures the problem - (imkxpc_presentFunctionRowItemTextInputViewWithEndpoint:reply:) block performed very slowly (59.22 secs). I had already posted [a question on Stackoverflow about the latter problem](https://stackoverflow.com/questions/40997541/r-warnings-imkclient-stall-detected) , but have not received any replies. I was hoping that you guys at Ask Different might have an idea of where this error comes from, and how I might be able to fix it.