today I installed C++Builder 10.3 Rio and tried also to install LMD VCL Complete 2019. After starting with setupvcl19src.exe with target directory D:\LMD2019, there appeared a messagebox:
Could not change Library path settings ...
The rest of the installation seemed to work. I then looked at the paths of C++Builder 10.2 Tokyo to change the Rio paths accordingly. But I cannot, because no lib directory exists in D:\LMD2019 as it exists in D:\LMD2018 and D:\LMD2017. I also couldn't find the needed lib directory or hpp-files at other places.
I could try to install the components directly into the IDE. But things might become worse then. I would prefer a working installer. Is there a chance for it?