Error in axis ????

Recently updated my packages (update.packages() and also updated rstudio to
the latest version. Had some problems but I thought I was able to get around
them by moving my folders. However, now I'm seeing a bit of a snag with some
code that previously ran fine.  Hoping someone can suggest a fix. Here's the
screen output:

require(quantmod)
Loading required package: quantmod
Loading required package: Defaults
Loading required package: xts
Loading required package: zoo

Attaching package: ?zoo?

The following object(s) are masked from ?package:base?:

     as.Date, as.Date.numeric

Loading required package: TTR

require(rdatamarket)

Loading required package: rdatamarket

g
<-dmlist("http://datamarket.com/data/set/1jz5/st-louis-financial-stress-index#display=line&ds=1jz5")
g$Date<-as.Date(g[,1], "%Y-%m-%d")
h<-as.xts(g, order.by=g[,1])
j<-h[,2]
s<-getSymbols('^GSPC', from="1990-01-01", to=Sys.Date())
s<-to.weekly(GSPC)
s<-s[,6]
x<-na.omit(merge(s,j)) ; names(x)<-c("sp","stress")
print(head(x))

                sp stress
1993-12-31 466.45 -0.453
1994-01-07 469.90 -0.442
1994-01-14 474.91 -0.435
1994-01-21 474.72 -0.449
1994-01-28 478.70 -0.462
1994-02-04 469.81 -0.513

par(mfrow=c(2,1))
plot(x[,1]/400, ylim=c(-1,5), col="blue")

Error in axis(1, at = xycoords$x, labels = FALSE, col = "#BBBBBB", ...) :
   formal argument "col" matched by multiple actual arguments

lines(x[,2], col="red")
ccf(drop(x[,1]), drop(x[,2]))

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