ggplot2无法正常加载

wanghai

请问Error: package ‘ggplot2’ was built before R 3.0.0: please re-install it
出现这样的情况怎么解决，已经装上最新的R并且更新出现以下结果，
Content type 'application/octet-stream' length 2669331 bytes (2.5 Mb)
opened URL
downloaded 2.5 Mb

package ‘ggplot2’ successfully unpacked and MD5 sums checked

The downloaded binary packages are in
        C:\Users\wanghai\AppData\Local\Temp\RtmpcZeyrH\downloaded_packages
但是还是无法加载