Darian Miller

Did the changes solve your problem?

You should not do a seperate manual uninstall. If you manually uninstall, then you should manually save your settings first. If you use the installer to install 10.4.2 and let it uninstall the prior version then you will be prompted to save your settings.

Nope. It works fine for me on a clean install of 10.4.2 Perhaps you have some IDE Experts installed like CNPack or GExperts? If so, I'd try to remove them and try it again.

Note: If you install 10.4.2 with the offline ISO you still have to put GetIt into online mode which can be done from the command prompt after installing: GetItCmd.exe -c=useonline

Goto https://my.embarcadero.com and login and click the download link in the left panel.

Goto https://my.embarcadero.com/ and logon and then click on the Download icon in the left panel to get a list of files that you can download.

You can join a Delphi related Telegram group for free, here are two: https://t.me/delphidevelopers https://t.me/DelphiProgramming_Eng Post a question on Telegram and see if you get a quick response. I know there are some Russian speaking developers on there. I would assume there's a Russian-only Delphi Telegroup available as well.

I'd give the graphics card more virtual memory, disable acceleration, and maybe a different controller choice. I hope something works!

Yes, I'd assume it's incompatibility on the virtual graphics hardware. Maybe check for updates on VirtualBox, or tweak the settings to a more generic display (if possible, it has been a while since I used Virtual Box)

I installed offline to a clean install of Windows 10/20H2 and I cannot reproduce. (Target system is running on VMWare Workstation though.)

That is supposed to be automatic. There's a new progress bar showing CodeInsight activity - is that doing anything?

With the occasional exception, binaries should be compatible across the major version releases. (10.4 and 10.4.1 and 10.4.2) https://www.ideasawakened.com/post/about-binary-compatibility-on-new-versions-of-delphi

Indeed! Just wrote a blog post on that: https://www.ideasawakened.com/post/rad-studio-10-4-2-is-now-available-with-a-much-enhanced-error-insight

Also note - it was stated in the 10.4.2 release webinar that the online help wasn't completely updated for 10.4.2. The online wiki was updated, but the help is not completely up to date with 10.4.2. One nice improvement with help is that you click on a compiler error and hit F1 to bring up the help for that error. (Used to work back that way in Delphi 7)

http://docwiki.embarcadero.com/RADStudio/Sydney/en/10.4_Sydney_-_Release_2