Trying to install more dictionaries leads to "Dictionary not loaded" error

I am using RStudio Version 1.3.1056 with R version 4.0.2 (2020-06-22) on Ubuntu 20.04.1 LTS.

I wanted to add the French spelling dictionary to RStudio, so I went to Global Options->Spelling->Install More Dictionaries. When I clicked on it, it waited a second and then the "Main dictionary language" changed to "Update dictionaries" with no other dictionaries listed. When I try to spellcheck a document, RStudio responds "An error has occurred: (String) : Dictionary not loaded.". I am unable to spellcheck in any language. I tried deleting completely the directory ~/.rstudio-desktop, but that did not fix the problem.

Does anyone have a solution to this problem? Is it a bug or am I doing something incorrectly?


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This sounds like a problem we have fixed very recently (perhaps even this morning!). Restart RStudio and try again -- do you still see the issue?

Presumably I will need to update Rstudio to the latest version then?

Sorry to be so obtuse, but what downloaded file? You mean the RStudio update? So I do need to update RStudio?

I deleted .rstudio-desktop and .config/RStudio and I rebooted my machine. The behavior is the same - no dictionaries and no spellcheck.

And could you clarify what you mean by "after the fix has been deployed"? How will I know when it has been deployed? Will the fix be a new version of RStudio or a new set of dictionary files that will install when I click on "update dictionaries"?

It has already been deployed, but you said that you have already done this before so I meant that you had to do it again.

This is the fix

If your problem persist, I think you should formally file an issue, for reference, this is the link where I reported the same problem but on a Windows system.

Aargh, I finally found why the reset didn't work. I had deleted .rstudio-desktop, .config/RStudio, but not .config/rstudio. I guess it pays to read the fine print. Now it is working.

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You don't, the fix is in the downloaded file.

I think I understand the meaning of your comment - you mean the downloaded dictionaries when you click on "Install more dictionaries", correct? Part of my confusion is that I currently see no way to download additional dictionaries. Right now I only have one "dictionary" that appears - "Update dictionaries" (i.e., if I click the little arrow to change my "main dictionary language", nothing other than "Update dictionaries" appears; see image below). Trying to click on that doesn't seem to do anything and spelling still doesn't work.

Just in case, I updated to the absolute latest RStudio 1.3.1093, but that didn't fix anything. I also completely shut down and restarted RStudio to no avail. I also tried copying a bunch of Hunspell .dic and .aff files from /usr/share/hunspell to ~/.rstudio-desktop/dictionaries/languages-user, which also had no effect - it is as if RStudio doesn't see the files.

You need to reset RStudio's state again (after the fix has been deployed).