Running examples in ‘SubgrPlots-Ex.R’ failed
The error most likely occurred in:

> ### Name: ggplot_stepp
> ### Title: STEPP for subgroup effect size
> ### Aliases: ggplot_stepp
> 
> ### ** Examples
> 
> # Load the data to be used
> data(prca)
> dat = prca
> 
> ## 9. stepp Plot -----------------------------------------------------------
> lab.y.title = paste("Treatment effect size (log-hazard ratio)");
> setup.ss = c(30,40)
> sub.title = paste0("(Subgroup sample sizes are set to ", setup.ss[2],
+                    "; overlap sizes are set to ", setup.ss[1], ")" )
> ggplot_stepp(dat,
+            covari.sel = 8,
+            trt.sel = 3,
+            resp.sel = c(1, 2),
+            outcome.type = "survival",
+            setup.ss = c(30,40),
+            alpha = 0.05,
+            title = NULL,
+            lab.y = lab.y.title,
+            subtitle = sub.title)
The subgroup sample sizes are actually 46 44 43 44 42 56 48 48 61 53 53 75 64 64 111 83 83 83 47 87 87 87 87 83 83 83 83 79 79 79 79 74 74 74 74 61 61 87 87 49 65 53 58 40 45 

 *** caught segfault ***
address 0x42, cause 'memory not mapped'

Traceback:
 1: grid.Call.graphics(C_text, as.graphicsAnnot(x$label), x$x, x$y,     resolveHJust(x$just, x$hjust), resolveVJust(x$just, x$vjust),     x$rot, x$check.overlap)
 2: drawDetails.text(x, recording = FALSE)
 3: drawDetails(x, recording = FALSE)
 4: drawGrob(x)
 5: recordGraphics(drawGrob(x), list(x = x), getNamespace("grid"))
 6: grid.draw.grob(x$children[[i]], recording = FALSE)
 7: grid.draw(x$children[[i]], recording = FALSE)
 8: drawGTree(x)
 9: recordGraphics(drawGTree(x), list(x = x), getNamespace("grid"))
10: grid.draw.gTree(x$children[[i]], recording = FALSE)
11: grid.draw(x$children[[i]], recording = FALSE)
12: drawGTree(x)
13: recordGraphics(drawGTree(x), list(x = x), getNamespace("grid"))
14: grid.draw.gTree(x$children[[i]], recording = FALSE)
15: grid.draw(x$children[[i]], recording = FALSE)
16: drawGTree(x)
17: recordGraphics(drawGTree(x), list(x = x), getNamespace("grid"))
18: grid.draw.gTree(x$children[[i]], recording = FALSE)
19: grid.draw(x$children[[i]], recording = FALSE)
20: drawGTree(x)
21: recordGraphics(drawGTree(x), list(x = x), getNamespace("grid"))
22: grid.draw.gTree(x$children[[i]], recording = FALSE)
23: grid.draw(x$children[[i]], recording = FALSE)
24: drawGTree(x)
25: recordGraphics(drawGTree(x), list(x = x), getNamespace("grid"))
26: grid.draw.gTree(gtable)
27: grid.draw(gtable)
28: print.ggplot(x)
29: (function (x, ...) UseMethod("print"))(x)
An irrecoverable exception occurred. R is aborting now ...