Required package rtl not found

[dwilbourn]

I have just done a clean install of Delphi Rio and Delphi Tokyo on a new PC. Installing Indy on Rio went fine. However when I tried to install it on Tokyo I got the 'Required package rtl not found' error. As far as I can see, the paths and environments are the same for both installations (barring expected 19.0 / 20.0 differences). Rio is installed as 32 & 64 bit, Tokyo as just 32 bit.

Does anyone have any ideas why Rio can find RTL but Tokyo cannot? 

The reason for the dual installation that some components I rely on are not yet available for Rio - but I only found that out once I had nearly finished installing everything else. So ten I started installing Tokyo as well

[kudzu]

Delphi uses not only the paths listed there but environment variables to load packages. Does it say which required package is not found?

[dwilbourn]

package RTL

[rlebeau]

The reason for the dual installation that some components I rely on are not yet available for Rio - but I only found that out once I had nearly finished installing everything else. So ten I started installing Tokyo as well

Even though the major versions of the IDE are separated, it is generally not a good idea to install an older version AFTER a newer version. You might need to uninstall both versions, then install Tokyo first, then Rio. Or, install one, or both, of them in separate VMs.

[dwilbourn]

Thanks for the suggestions. I have had to abandon Tokyo for now anyway for other reasons - I'm going to have to try going back to XE3 so I will see what happens with that!