Index: trunk/MagicSoft/Mars/mbase/MLogHtml.cc
===================================================================
--- trunk/MagicSoft/Mars/mbase/MLogHtml.cc	(revision 6824)
+++ trunk/MagicSoft/Mars/mbase/MLogHtml.cc	(revision 6870)
@@ -47,4 +47,6 @@
         delete fOut;
         fOut = NULL;
+
+        cerr << "Cannot open file " << name << ": " << strerror(errno) << endl;
         return;
     }
@@ -81,4 +83,7 @@
 void MLogHtml::Underline()
 {
+    if (!fOut)
+        return;
+
     *fOut << "<u>";
     fUnderline = kTRUE;