R-Studio - installing package knn error - r

I try to install the kknn package in R. It downloads the folder but whenever I use library(kknn) I get:
Error in library(kknn) : there is no package called ‘kknn’
install.packages("kknn") Installing package into ‘C:/Users/Ed/Documents/R/win-library/3.2’ (as ‘lib’ is unspecified) trying URL 'https://cran.rstudio.com/bin/windows/contrib/3.2/kknn_1.3.0.zip' Content type 'application/zip' length 321517 bytes (313 KB) downloaded 313 KB
package ‘kknn’ successfully unpacked and MD5 sums checked Warning in install.packages : cannot remove prior installation of package ‘kknn’
The downloaded binary packages are in C:\Users\Ed\AppData\Local\Temp\RtmpWClNdR\downloaded_packages
library(kknn) Error in library(kknn) : there is no package called ‘kknn’
Any suggestions?
Many thanks
Ed

You may try:
install.packages("kknn")
library(kknn)

Based on your edit:
goto R/win-library/3.2 folder, find the folder kknn and delete it. restart your R session then reinstall the package.
install.packages(kknn)
library(kknn)

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Error: package or namespace load failed for ‘caret’ in get(Info[i, 1], envir = env):
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package ‘caret’ successfully unpacked and MD5 sums checked
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>

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I'm new to R and I'm just trying to get through some tutorials.
When I try installing ggplot2, I get this error.
Error in library(ggplot2) : There is no package called 'ggplot2'
I tried these in R and RStudio.
install.packages("ggplot2", dep=T)
install.packages('ggplot2', repos='http://cran.us.r-project.org')
remove.packages("ggplot2")
but I get the error
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This is what I get from install.packages("ggplot2")
> install.packages("ggplot2")
Installing package into ‘.../R/win-library/3.4’
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Warning in install.packages :
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downloaded 2.7 MB
package ‘ggplot2’ successfully unpacked and MD5 sums checked
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cannot remove prior installation of package ‘ggplot2’
The downloaded binary packages are in
C:...\AppData\Local\temp\RtmpqaGNpr\downloaded_packages
I removed all ggplot2 files manually then tried to install again. Here's my result.
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Installing package into ‘.../R/win-library/3.4’
(as ‘lib’ is unspecified)
--- Please select a CRAN mirror for use in this session ---
trying URL 'https://ftp.osuosl.org/pub/cran/bin/windows/contrib/3.4/ggplot2_2.2.1.zip'
Content type 'application/zip' length 2784566 bytes (2.7 MB)
downloaded 2.7 MB
package ‘ggplot2’ successfully unpacked and MD5 sums checked
Warning: unable to move temporary installation ‘...\R\win-library\3.4\file26b43a54980\ggplot2’ to ‘...\R\win-library\3.4\ggplot2’
The downloaded binary packages are in
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These code was run using R 3.4.2
Steps
Go To Tools
Install Packages
In Packages Text Box Type ggplot2
Check the checkbox install dependencies
When having this issue I would suggest :
try turning it off and on again
update R to last version if possible
remove manually all the folders related to the relevant package and retry the installation
change your default library location : How do you change library location in R?
Try launching R client directly from command prompt, then issue the instruction:
install.packages("ggplot2", lib="C:/Users/YourUser/Documents/R/win-library/3.3")
You need to update your R version and do this but you'll need install all packages again:
Tool > Global Options > R version (CHANGE) > Select "Use your machine's default version of R..."

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downloaded 1.4 MB
package ‘car’ successfully unpacked and MD5 sums checked
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downloaded 776 KB
package ‘SparseM’ successfully unpacked and MD5 sums checked
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Follow up:
After a comment regarding R version 3.2.3 I thought it would be an easy fix to just download this version, install, and erase 3.2.2. The problem then is that RStudio did not seem to work. I un-installed and re-installed R-studio, and now I get this when opening R studio:
Without knowing what version of the car package you're using, it's hard to know exactly what the source of the problem is. It seems likely, however, that you haven't installed the proper version of the pbkrtest, on which the Rcmdr package depends.
Is there a compelling reason not to upgrade everything to their current versions, including R, all packages, and RStudio?
Best,
John

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