Thanks for the quick response, which led me to the solution. We have a Finalbuilder project which builds our entire Delphi environment, and for some reason it did not re-build the RC files (even with the appropriate checkbox checked). I have made a note to check this so that hopefully I will remember on the next Flexcel upgrade. We do not use runtime packages, and I was able to resolve the problem by using the excellent resource explorer from NTCore.