Index: channels/_generic.py
==================================================================
--- channels/_generic.py
+++ channels/_generic.py
@@ -161,11 +161,11 @@
 
             # load default category
             if (self.current):
                 self.load(self.current)
             else:
-                mygtk.columns(self.gtk_list, self.datamap, [{}])
+                mygtk.columns(self.gtk_list, self.datamap, [])
                 
             # add to main menu
             mygtk.add_menu(parent.channelmenuitems, self.title, lambda w: parent.channel_switch(w, self.module) or 1)
             
             

Index: mygtk.py
==================================================================
--- mygtk.py
+++ mygtk.py
@@ -88,11 +88,11 @@
         #   entries = [ {"titlerow":"first", "interndat":123}, {"titlerow":"..."}, ]
         # Keys not mentioned in the datamap get ignored, and defaults are applied
         # for missing cols. All values must already be in the correct type however.
         #
         @staticmethod
-        def columns(widget, datamap=[], entries=[], pix_entry=False, typecast=0):
+        def columns(widget, datamap=[], entries=None, pix_entry=False, typecast=0):
 
             # create treeviewcolumns?
             if (not widget.get_column(0)):
                 # loop through titles
                 datapos = 0
@@ -145,12 +145,12 @@
                 widget.set_search_column(2)   #??
                 widget.set_search_column(1)   #??
                 #widget.set_reorderable(True)
                
             # add data?
-            if (entries):
-                #- expand datamap            
+            if (entries is not None):
+                #- expand datamap
                 vartypes = []  #(str, str, bool, str, int, int, gtk.gdk.Pixbuf, str, int)
                 rowmap = []    #["title", "desc", "bookmarked", "name", "count", "max", "img", ...]
                 if (not rowmap):
                     for desc in datamap:
                         for var in xrange(2, len(desc)):
@@ -195,11 +195,13 @@
                         ls.append(row)   # had to be adapted for real TreeStore (would require additional input for grouping/level/parents)
 
                     except:
                         # brute-force typecast
                         ls.append( [va  if ty==gtk.gdk.Pixbuf  else ty(va)   for va,ty in zip(row,vartypes)]  )
-                __print__("→", row, len(row))
+
+                if entries:
+                     __print__("→", row, len(row))
                 
                 # apply array to widget
                 widget.set_model(ls)
                 return ls