Solved -- I uninstalled and reinstalled and the problem went away.

I am trying to add a simple Tchart with one line series to an existing FMX program. Delphi Tokyo latest hotfix, Win32 build, latest version of TChart Pro. The program compiles fine, but throws a run-time error message that says: "Exception EReadError in Module (myprog.exe) at 000C7AE4. Error reading...