最初稀里糊涂装了一气，后来按照Readme.txt上，
Use "File/Open..." menu item of Delphi IDE to open RX' runtime
package RXCTL5.DPK. In "Package..." window click "Compile" button to
compile packages RXCTL5.DPK. After compiling repeat that for other RX
Library run-time packages RXDB5.DPK, RXBDE5.DPK. Put compiled BPL files
into directory that is accessible through the search PATH (i.e. DOS
"PATH" environment variable; for example, in the Windows/System directory).
After compiling RX run-time packages you must install RX design-time
packages into the IDE.
Use "File/Open..." menu item to open RX design-time package DCLRX5.DPK.
In "Package..." window click "Compile" button to compile the package
and then click "Install" button （这儿就出错了）to register RX Library components on
the component palette. Repeat that for other RX Library design-time
packages DCLRXDB5.DPK and DCLRXBD5.DPK.
owersun