plot.xts: Error in parse.format(format[1]) : unrecognized format %b %d%n%H:%M:%S

I cannot figure out what's wrong here.
If someone could shed some light, I'd appreciate it very much.


I form an xts object with a chron index (small version here) that seems
OK, but I can't plot it:

plot(gesmall)

Error in parse.format(format[1]) : unrecognized format %b %d%n%H:%M:%S

str(gesmall)

An 'xts' object from (12/07/08 19:46:40) to (12/07/08 19:46:50)
containing:
  Data: num [1:11, 1] 98 98 98 98 98 ...
 - attr(*, "dimnames")=List of 2
  ..$ : NULL
  ..$ : NULL
  Indexed by: Classes 'chron', 'dates', 'times'  atomic [1:11] 14221
14221 14221 14221 14221 ...
  ..- attr(*, "format")= Named chr [1:2] "m/d/y" "h:m:s"
  .. ..- attr(*, "names")= chr [1:2] "dates" "times"
  ..- attr(*, "origin")= Named num [1:3] 1 1 1970
  .. ..- attr(*, "names")= chr [1:3] "month" "day" "year"
  xts Attributes:  
 NULL

summary(gesmall)

Index                        gesmall     
 Min.   :(12/07/08 19:46:40)   Min.   :98.04  
 1st Qu.:(12/07/08 19:46:42)   1st Qu.:98.04  
 Median :(12/07/08 19:46:45)   Median :98.04  
 Mean   :(12/07/08 19:46:45)   Mean   :98.04  
 3rd Qu.:(12/07/08 19:46:48)   3rd Qu.:98.04  
 Max.   :(12/07/08 19:46:50)   Max.   :98.04

gesmall

(12/07/08 19:46:40) 98.04
(12/07/08 19:46:41) 98.04
(12/07/08 19:46:42) 98.04
(12/07/08 19:46:43) 98.04
(12/07/08 19:46:44) 98.04
(12/07/08 19:46:45) 98.04
(12/07/08 19:46:46) 98.04
(12/07/08 19:46:47) 98.04
(12/07/08 19:46:48) 98.04
(12/07/08 19:46:49) 98.04
(12/07/08 19:46:50) 98.04

# It looks as if there are somehow empty field names; not sure how

that happens or if it's important

sessionInfo()

R version 2.8.0 Patched (2008-11-02 r46817) 
i386-pc-mingw32 

locale:
LC_COLLATE=English_United States.1252;LC_CTYPE=English_United
States.1252;LC_MONETARY=English_United
States.1252;LC_NUMERIC=C;LC_TIME=English_United States.1252

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base


other attached packages:
[1] xts_0.0-16   zoo_1.5-4    chron_2.3-24

loaded via a namespace (and not attached):
[1] grid_2.8.0      lattice_0.17-15 tools_2.8.0    

Thanks,
-- David