installation - R Error: package 'mvtnorm' required by 'multcomp' could not be found -


i need install package multcomp. after installing package (install.packages("multcomp")) message: 

package ‘zoo’ unpacked , md5 sums checked package ‘mvtnorm’ unpacked , md5 sums checked package ‘th.data’ unpacked , md5 sums checked package ‘sandwich’ unpacked , md5 sums checked package ‘multcomp’ unpacked , md5 sums checked  downloaded binary packages in     c:\users\kbn982\appdata\local\temp\rtmpwbldqw\downloaded_packages

but when load library error message appears:

error: package 'mvtnorm' required 'multcomp' not found .

i tried change library location installing path. don't have clue why message.


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