各位好！
我使用R版本为3.0.1，想使用xtable包，但每次都提示说xtable是在3.0.0之前的版本下创建的，让重新安装xtable，但重装后，也提示成功解码了，但都不能加载。请各位帮助！
> install.packages("xtable")
Installing package into ‘F:/Users/chenwf/Documents/R/win-library/3.0’
(as ‘lib’ is unspecified)
trying URL 'http://cran.rstudio.com/bin/windows/contrib/3.0/xtable_1.7-1.zip'
Content type 'application/octet-stream' length 378219 bytes (369 Kb)
opened URL
downloaded 369 Kb
package ‘xtable’ successfully unpacked and MD5 sums checked
The downloaded binary packages are in
F:\Users\chenwf\AppData\Local\Temp\RtmpAdXj8D\downloaded_packages
>library(xtable)
Error: package ‘xtable’ was built before R 3.0.0: please re-install it
