Index: eit-branch/libs/libmythtv/channelutil.cpp
===================================================================
--- eit-branch.orig/libs/libmythtv/channelutil.cpp      2006-05-02 09:23:47.000000000 +0100
+++ eit-branch/libs/libmythtv/channelutil.cpp   2006-05-02 22:04:15.000000000 +0100
@@ -194,7 +194,8 @@
         {
             QString modulation;
             uint mux = ChannelUtil::GetMplexID(sourceid, tsid, netid);
-            freq     = ChannelUtil::GetTuningParams(mux, modulation);
+            if (mux != -1)
+                freq     = ChannelUtil::GetTuningParams(mux, modulation);
         }

         uint mux = ChannelUtil::CreateMultiplex(