RStudio will not start; libicuuc issue

[trin_tragula]

Hi there, ubuntu 20.04, RStudio 1.3-1093. R-4.0-3 installed and works fine from the commandline.

But Rstudio gives:

/usr/lib/rstudio/bin/rsession: error while loading shared libraries: libicuuc.so.60: cannot open shared object file: No such file or directory

I have tried very hard to install this libicuuc thing without success. can anyone advise?

[jonathan]

Have you tried installing Ubuntu's libicu package?

$ sudo apt install libicu60

[trin_tragula]

Hello jonathan, thanks for this. This is what happened:

hankin@cuttlefish:~ $ sudo apt install libicu60
[sudo] password for rhankin: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package libicu60
rhankin@cuttlefish:~ $ 

any advice?

[kevinushey]

On Ubuntu 20.04, rsession links to the following ICU libraries:

kevin@ubuntu:/usr/lib/rstudio/bin
$ ldd rsession | grep icu
	libicuuc.so.66 => /lib/x86_64-linux-gnu/libicuuc.so.66 (0x00007f916053c000)
	libicui18n.so.66 => /lib/x86_64-linux-gnu/libicui18n.so.66 (0x00007f916023d000)
	libicudata.so.66 => /lib/x86_64-linux-gnu/libicudata.so.66 (0x00007f915e5d2000)

which are normally provided by:

sudo apt install libicu-dev

Can you confirm that you downloaded the binary of RStudio built for Ubuntu 20.04, and not an older version of Ubuntu?