Downloading RStudio Desktop for Mac 1.4.717 - will not verify - Move to Trash

Having strange behavior on an iMac of 2010 vintage,
running High Sierra 10.13.6

I can download current version 1.4.1717 or preview version 1.4.1725-2
but when it tries to verify before opening - I get a message that says it is corrupted, Move it to the Trash.

I can download and install 1.3.1093 with no difficulty on this 2010 iMac.
I have re-tried 1.4.1717, several times, but it always fails in verifying.

I can download and install 1.4.717 with no difficulty on my 2018 MacBook Air laptop, so it is not an internet connection issue.

Is there some sort of cleaning/maintenance I need to do? Some way to make the verification work?

Any ideas on this odd behavior?


As noted on the RStudio Desktop download web page, version 1.4.1717 requires macOS 10.14 or higher.

Oh dear.
Old eyes vs. the small print.
Just about time for a new M1 Mac.

Requires macOS 10.14+ (64-bit)

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