I uninstalled all 3rd party packages, then XE5, and did a registry + file system cleanup. Then reinstalled XE5, and added Teechart Pro before any other libraries.

All good now! Thanks Yeray, for your perseverance.

Yes, have just tried it on an older machine and seems to run OK. I guess my XE5 is broken in some way.

I will reinstall XE5 and report back!

Yeray, thanks for the suggestions but I'm afraid there is no improvement. :( I did have Update 2, but not the hotfixes. I've applied all those applicable (2 is not for Xe5/Delphi, and 6 only updates Macintosh files). And I have re-run TeeInstall, as Admin. Starting the IDE as Admin: The procedure en...

On reading some other threads here, I tried running TeeInstall as administrator. Not sure if this was the reason, but now I see even more messages on IDE startup! The procedure entry point @Vcltee@Teeprocs@TeeTranslateControl$qqrxp25System@Classes@TComponent could not be located in the dynamic link ...

Your referred post instructs: "In your case, please, unselect the TeeChart Standard package shipped with the IDE (Tee9210), and you should be able to safely select the TeeChart Pro/Std commercial package (Tee921).". I don't understand. How do I "unselect"? if you mean in "Component|Install Packages"...

(I don't seem to be able to edit the post)
Added: my Teechart Pro is the no source code license.

I have Delphi XE5, with a number of other libraries installed including DevExpress VCL. My base XE5 did not have the standard (free) Teechart installed. I have just purchased Teechart Pro VCL, and am having trouble installing it (Win10 64 bit, Delphi XE5 32 bit). I've managed to get past several iss...