My attempts to use coefplot() today ran into a problem with the ggproto() function in ggplot2.

I got the following message:
Ignoring unknown aesthetics: xmin, xmaxError: PositionDodgeV was built with an incompatible version of ggproto.
Please reinstall the package that provides this extension.

I tried the reinstall from Hadley's github version of ggplot2, but it didn't help. Have you seen this before.

There are some stackoverflow comments that indicate that this happens with other packages using ggplot() and it can be fixed by using Hadley's development version of ggplot2, but not in this case.