Thanks! And here's the install dump. It also happens just like this if I leave off the "dependencies = TRUE" thing.

```
> install.packages('knitr', dependencies = TRUE)
Installing package into ‘\\D5H2PFP1/User$/Stephanie/R/win-library/3.5’
(as ‘lib’ is unspecified)
also installing the dependencies ‘colorspace’, ‘labeling’, ‘munsell’, ‘RColorBrewer’, ‘BH’, ‘gtable’, ‘plyr’, ‘reshape2’, ‘scales’, ‘viridisLite’, ‘httpuv’, ‘xtable’, ‘sourcetools’, ‘later’, ‘promises’, ‘lazyeval’, ‘ggplot2’, ‘miniUI’, ‘backports’, ‘assertthat’, ‘ps’, ‘fansi’, ‘utf8’, ‘mime’, ‘glue’, ‘magrittr’, ‘stringi’, ‘htmltools’, ‘jsonlite’, ‘shiny’, ‘crosstalk’, ‘manipulateWidget’, ‘base64enc’, ‘rprojroot’, ‘withr’, ‘processx’, ‘filehash’, ‘Rcpp’, ‘curl’, ‘openssl’, ‘R6’, ‘sysfonts’, ‘showtextdb’, ‘cli’, ‘crayon’, ‘pillar’, ‘rlang’, ‘evaluate’, ‘highr’, ‘markdown’, ‘stringr’, ‘yaml’, ‘formatR’, ‘testit’, ‘digest’, ‘rgl’, ‘rmarkdown’, ‘htmlwidgets’, ‘webshot’, ‘tikzDevice’, ‘tinytex’, ‘xfun’, ‘reticulate’, ‘JuliaCall’, ‘png’, ‘jpeg’, ‘xml2’, ‘httr’, ‘DBI’, ‘showtext’, ‘tibble’
There are binary versions available but the source versions are later:
binary source needs_compilation
later 0.7.4 0.7.5 TRUE
stringi 1.1.7 1.2.4 TRUE
Binaries will be installed
trying URL 'cran.rstudio.com/bin/windows/contrib/3.5/colorspace_1.3-2[dot]zip'
Content type 'application/zip' length 527483 bytes (515 KB)
downloaded 515 KB
#one of the above happened for each of the below...
package ‘colorspace’ successfully unpacked and MD5 sums checked
package ‘labeling’ successfully unpacked and MD5 sums checked
package ‘munsell’ successfully unpacked and MD5 sums checked
package ‘RColorBrewer’ successfully unpacked and MD5 sums checked
package ‘BH’ successfully unpacked and MD5 sums checked
package ‘gtable’ successfully unpacked and MD5 sums checked
package ‘plyr’ successfully unpacked and MD5 sums checked
package ‘reshape2’ successfully unpacked and MD5 sums checked
package ‘scales’ successfully unpacked and MD5 sums checked
package ‘viridisLite’ successfully unpacked and MD5 sums checked
package ‘httpuv’ successfully unpacked and MD5 sums checked
package ‘xtable’ successfully unpacked and MD5 sums checked
package ‘sourcetools’ successfully unpacked and MD5 sums checked
package ‘later’ successfully unpacked and MD5 sums checked
package ‘promises’ successfully unpacked and MD5 sums checked
package ‘lazyeval’ successfully unpacked and MD5 sums checked
package ‘ggplot2’ successfully unpacked and MD5 sums checked
package ‘miniUI’ successfully unpacked and MD5 sums checked
package ‘backports’ successfully unpacked and MD5 sums checked
package ‘assertthat’ successfully unpacked and MD5 sums checked
package ‘ps’ successfully unpacked and MD5 sums checked
package ‘fansi’ successfully unpacked and MD5 sums checked
package ‘utf8’ successfully unpacked and MD5 sums checked
package ‘mime’ successfully unpacked and MD5 sums checked
package ‘glue’ successfully unpacked and MD5 sums checked
package ‘magrittr’ successfully unpacked and MD5 sums checked
package ‘stringi’ successfully unpacked and MD5 sums checked
package ‘htmltools’ successfully unpacked and MD5 sums checked
package ‘jsonlite’ successfully unpacked and MD5 sums checked
package ‘shiny’ successfully unpacked and MD5 sums checked
package ‘crosstalk’ successfully unpacked and MD5 sums checked
package ‘manipulateWidget’ successfully unpacked and MD5 sums checked
package ‘base64enc’ successfully unpacked and MD5 sums checked
package ‘rprojroot’ successfully unpacked and MD5 sums checked
package ‘withr’ successfully unpacked and MD5 sums checked
package ‘processx’ successfully unpacked and MD5 sums checked
package ‘filehash’ successfully unpacked and MD5 sums checked
package ‘Rcpp’ successfully unpacked and MD5 sums checked
package ‘curl’ successfully unpacked and MD5 sums checked
package ‘openssl’ successfully unpacked and MD5 sums checked
package ‘R6’ successfully unpacked and MD5 sums checked
package ‘sysfonts’ successfully unpacked and MD5 sums checked
package ‘showtextdb’ successfully unpacked and MD5 sums checked
package ‘cli’ successfully unpacked and MD5 sums checked
package ‘crayon’ successfully unpacked and MD5 sums checked
package ‘pillar’ successfully unpacked and MD5 sums checked
package ‘rlang’ successfully unpacked and MD5 sums checked
package ‘evaluate’ successfully unpacked and MD5 sums checked
package ‘highr’ successfully unpacked and MD5 sums checked
package ‘markdown’ successfully unpacked and MD5 sums checked
package ‘stringr’ successfully unpacked and MD5 sums checked
package ‘yaml’ successfully unpacked and MD5 sums checked
package ‘formatR’ successfully unpacked and MD5 sums checked
package ‘testit’ successfully unpacked and MD5 sums checked
package ‘digest’ successfully unpacked and MD5 sums checked
package ‘rgl’ successfully unpacked and MD5 sums checked
package ‘rmarkdown’ successfully unpacked and MD5 sums checked
package ‘htmlwidgets’ successfully unpacked and MD5 sums checked
package ‘webshot’ successfully unpacked and MD5 sums checked
package ‘tikzDevice’ successfully unpacked and MD5 sums checked
package ‘tinytex’ successfully unpacked and MD5 sums checked
package ‘xfun’ successfully unpacked and MD5 sums checked
package ‘reticulate’ successfully unpacked and MD5 sums checked
package ‘JuliaCall’ successfully unpacked and MD5 sums checked
package ‘png’ successfully unpacked and MD5 sums checked
package ‘jpeg’ successfully unpacked and MD5 sums checked
package ‘xml2’ successfully unpacked and MD5 sums checked
package ‘httr’ successfully unpacked and MD5 sums checked
package ‘DBI’ successfully unpacked and MD5 sums checked
package ‘showtext’ successfully unpacked and MD5 sums checked
package ‘tibble’ successfully unpacked and MD5 sums checked
package ‘knitr’ successfully unpacked and MD5 sums checked
The downloaded binary packages are in
C:\Users\Stephanie\AppData\Local\Temp\Rtmpuwbb6Z\downloaded_packages
Error: invalid version specification ‘NA’
In addition: Warning message:
In utils:::packageDescription(packageName, fields = "Version") :
no package 'knitr' was found
```