Zeoslib Portal

mdaems is correct, if you had installed some old version of Zeos, you have to have remove the old version. Follow this steps: remove it in Component > Install Packages (all references the old zeos); after this in: ...\My documents\Borland Studio Projects\Bpl you have to have remove all files about z...

Ok, in the project manager, click with right button of your mouse over ZComponentDesign and install it.
Try it.

Ok, I had the same problem, so I can fix it using this installation sequence:

Insider the directory ...ZEOSDBO-6.6.0-beta\packages\delphi10

ZCore.dpk
ZParseSql.dpk
ZPlain.dpk
ZComponent.dpk
ZComponentDesign.dpk

Compile all project and in the project manager install ZComponentDesign.