[R] Error with install.packages using R v 3.5.1 and 3.5.2

[Emily Wan]

Hi -
I am working with R on a Window Server 2012 R2 - I had originally installed
R (v3.5.1) in September/October 2018 and have used multiple packages
without incident. However, last week, when attempting to install additional
packages (using install.packages() or Bioconductor's BiocManager::install()
wrapper), I kept on receiving the following error message:

Error in if (any(diff)) { : missing value where TRUE/FALSE needed

I have searched the prior threads on this topic (including the issue
reported with R v3.4.0 which required a patch), rebooted my server, and
actually uninstalled R v3.5.1 and upgraded to v3.5.2 but am still receiving
the same error message when I attempt to install *any* package.
Please let me know what additional details I can provide to assist with
troubleshooting. Thank you.

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