Index: /trunk/src/VBox/ValidationKit/tests/additions/tdAddGuestCtrl.py
===================================================================
--- /trunk/src/VBox/ValidationKit/tests/additions/tdAddGuestCtrl.py	(revision 84196)
+++ /trunk/src/VBox/ValidationKit/tests/additions/tdAddGuestCtrl.py	(revision 84197)
@@ -2255,6 +2255,7 @@
                                 else:
                                     if abBuf:
-                                        reporter.log2('Process (PID %d) got %d bytes of %s data' % (iPid, len(abBuf), sFdNm,));
-                                        for sLine in abBuf.splitlines():
+                                        reporter.log2('Process (PID %d) got %d bytes of %s data (type: %s)'
+                                                      % (iPid, len(abBuf), sFdNm, type(abBuf)));
+                                        for sLine in abBuf.decode("utf-8").splitlines():
                                             reporter.log('%s: %s' % (sFdNm, sLine));
                                         acbFdOut[iFd] += len(abBuf);