Running examples in 'animint2-Ex.R' failed
The error most likely occurred in:

> ### Name: animint
> ### Title: Create an animint
> ### Aliases: animint
> 
> ### ** Examples
> 
> library(animint2)
> data(WorldBank, package="animint2")
> years <- unique(WorldBank[, "year", drop=FALSE])
> y1960 <- subset(WorldBank, year==1960)
> animint(
+   title="Linked scatterplot and time series", #web page title.
+   time=list(variable="year",ms=3000), #variable and time delay used for animation.
+   duration=list(year=1000), #smooth transition duration in milliseconds.
+   selector.types=list(country="multiple"), #single/multiple selection for each variable.
+   first=list( #selected values to show when viz is first rendered.
+     country=c("Canada", "Japan"),
+     year=1970),
+   ## ggplots are rendered together for an interactive data viz.
+   ts=ggplot()+
+     theme_animint(width=500)+
+     make_tallrect(WorldBank, "year")+
+     geom_text(aes(
+       year, life.expectancy, label=country),
+       showSelected="country",
+       clickSelects="country",
+       hjust=1,
+       data=y1960)+
+     scale_x_continuous(limits=c(1950, NA))+
+     geom_line(aes(
+       year, life.expectancy, group=country, color=region),
+       clickSelects="country",
+       data=WorldBank,
+       size=4,
+       alpha=0.55),
+   scatter=ggplot()+
+     geom_point(aes(
+       fertility.rate, life.expectancy,
+       key=country, colour=region, size=population),
+       showSelected="year",
+       clickSelects="country",
+       data=WorldBank)+
+     geom_text(aes(
+       fertility.rate, life.expectancy,
+       key=country,
+       label=country),
+       showSelected=c("country", "year"),
+       data=WorldBank)+
+     geom_text(aes(
+       5, 80, key=1, label=paste("year =", year)),
+       showSelected="year",
+       data=years)+
+     scale_size_animint(pixel.range=c(2,20), breaks=10^(4:9)))
Saving animint in temporary directory; specify output directory using animint(out.dir="path/to/directory")
Error: 'unitType' is not an exported object from 'namespace:grid'
Execution halted