Hi, > I've been seeing this error message a lot lately. > MessageImporter::Import() - error unflattening icon archive: Data is > not a message > I suspect it's due to improper formatting of rdef files, or could > there be something else wrong? It shows up when running a handful of > various Haiku GUI apps from the command line, including AboutSystem. It's left-over debug output. Best regards, -Stephan