[Rd] Uninstall registry key the same for all versions (PR#10746)

Duncan Murdoch murdoch at stats.uwo.ca
Tue Feb 12 19:02:24 CET 2008

On 2/12/2008 12:45 PM, Henrik Bengtsson wrote:
> This is a beautiful example on how an added feature matures into a bug
> over time :)
> I let the Windows developers argue with the pro's and con's of your
> suggestion.  I just wanna add a related suggestion that when you have
> multiple installations and you run "Unistall R 2.6.0" the first dialog
> ('R for Windows Uninstall') you see says "Are you sure you want to
> completely remove R for Windows and all of its components?"  This
> message does not specify the version being uninstalled, so without
> previous experience you certainly wonder if this is going to install
> all of your R installations or just one.

I'm just testing now, but I suspect Gerhard's suggestion of specifying 
AppID will fix this too.

Duncan Murdoch

> My $0.02
> /Henrik
> On Feb 12, 2008 8:20 AM,  <Gerhard.Thallinger at tugraz.at> wrote:
>> Full_Name: Gerhard Thallinger
>> Version: R 2.2.0 through R 2.6.2
>> OS: Windows XP
>> Submission from: (NULL) (
>> The uninstall key in the Windows Registry
>> (HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\)
>> is the same ("R for Windows_is1") for all R versions
>> (at least from 2.2.0 to 2.6.2).
>> This prohibits managing multiple R versions in a clean way, since
>> the installation of a new R versions overwrites the uninstall key
>> of the previous installed version. This makes an uninstall of
>> a previous version via "Add/Remove Software" impossible.
>> The uninstall key should also contain the R version number
>> (e.g. "R for Windows 2.6.2_is1"). The name of the registry key can
>> be set in the Inno Setup definition file using the "AppId" directive.
>> At the moment "AppId" is not set, therefor "AppName" is used as the
>> key name.
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