problem running example(gwr) in package spgwr_0.2-7 (Windows binary)

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I am encountering errors when attempting to run the example(gwr) in the
spgwr package. The first 4 commands run correctly, however I receive an
error trying to execute the 5th command.

gwr> data(columbus)

gwr> col.lm <- lm(crime ~ income + housing, data = columbus)

gwr> summary(col.lm)

gwr> col.bw <- gwr.sel(crime ~ income + housing, data = columbus,
    coords = cbind(columbus$x, columbus$y))

gwr> col.gauss <- gwr(crime ~ income + housing, data = columbus,
    coords = cbind(columbus$x, columbus$y), bandwidth = col.bw,
    hatmatrix = TRUE)
Error in gridded(fit.points) : No direct or inherited method for function
"gridded" for this call

I'm running the following configuration on Windows XP.
Windows R 2.0.1
Windows Binary sp_0.7-0.zip
Windows Binary spgwr_0.2-7.zip
This information is just what is needed.

All of these are now superceded, and what is happening here is that the
(older) spgwr "view" of the sp classes no longer fits reality. This is a
bit of a problem if you need to keep R 2.0.1, rather than upgrading to R
2.1.0. If you upgrade, you can install the current sp package from CRAN,
and the Windows binary (spgwr_0.3-1) with the commands given on the
R-spatial homepage:

rSpatial <- "http://r-spatial.sourceforge.net/R"
install.packages("spgwr", repos=rSpatial)

But that is presupposing you are prepared to upgrade R itself. If not, 
then that functionality is not available. Please let the list know how you 
get on, sp is developing nicely, but there is plenty of opportunity to 
contribute ideas and reports.

Roger
Any guidance would be appreciated.

Ken

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Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Helleveien 30, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand at nhh.no