[R] 2.8.0 on Mac: libR.dylib

[Chris Lokan]

> I use a Macbook Pro laptop, running OX X 10.4.11. I have been running R
> 2.7.1 with no problems for years, including installing packages such as
> chron, Cairo, Design.

Oops, I should say, I've been running R with no problems for years, most
recently version 2.7.1 ...

Even so, the change to 2.8.0 is the first time an upgrade has not been easy
for me. 

How might I fix my error?

Chris