R and R Studio - Problem with the package xlsx

Dear list,

 

I'm running windows 7 with R i386 3.1.2. I'm trying to load a excel
spreadsheet into R using the xlsx package. I posted my code below with the
error I got.

 

[R Studio]

library(xlsx)
quiz1q3data <- read.xlsx("quiz1q3.xlsx",sheetIndex=1,header=FALSE)

Error in .jcall("RJavaTools", "Ljava/lang/Object;", "invokeMethod", cl,  : 
  java.util.zip.ZipException: invalid code -- missing end-of-block

 

With [R], it was even worse as I could not load the rJava package which the
xlsx library depends on.

 

Has anyone an idea what's going wrong?

 

Thanks in advance,

Anh