I try to install IBO (ibo-5.9.1) in Delphi 10.1 Update (Berlin).

All things goes well, I see all bpls, dcu,... in  C:\ibo5\lib\d10_1\Win32\Release

Everything appears be OK, but none package is installed in IDE.

I try to build manually, put all necessary vars in browse path, search paths like HowToInstall.rtf instructions.

Again, all package are correctly compiled and generated bpl and dcu, none error.

But when I try to click Install Package, says that 

ibo5cdt_10_1 Delphi 10.1 Berlin - Wellbome page[Built]: bds.exe - System error (Caption)

The program can be started because missing ibo5crt_d10_1.bpl. Try to reinstall to resolve it.

So All *rt*.bpl are compiled and preset in this path, but I cant install any *dt* package.

Using batch files as build.cmd and install.cmd, I have the same resuilt, all files compile well and supposted installed, but does not have any IBO components in IDE.

Why my Delphi doing this why, why...?

The same error with previous IBO version as ibo-5.7.13.