r - cran 包“party_1.0-9”windows 版本的指令库（party）有问题

Question

我正在使用 R Studio windows 版本。我已经安装了 cran Package "party_1.0-9" windows 版本（用于决策树相关任务）。它显示为安装成功。我给出指令库（派对）的那一刻，它显示以下错误消息

Loading required package: grid
Loading required package: zoo

Attaching package: ‘zoo’

The following object is masked from ‘package:base’:

    as.Date, as.Date.numeric

Error: package ‘sandwich’ required by ‘party’ could not be found
In addition: Warning messages:
1: package ‘party’ was built under R version 3.0.2 
2: package ‘zoo’ was built under R version 3.0.2 "

我反复卸载安装，问题依旧。请帮忙。