*** lib/TWiki/Plugins/TreePlugin.pm	2008-04-11 00:58:00.000000000 +0200
--- lib/TWiki/Plugins/TreePlugin.pm.new	2008-04-17 17:30:50.000000000 +0200
***************
*** 341,346 ****
--- 341,347 ----
  	my $cache='';
  	
  	#Create our file cache if needed
+     $aWeb =~ s/\//./g;
      my $cacheFileName = "$workAreaDir/$aWeb.tree";
      if (-e $cacheFileName)
      	{
***************
*** 410,415 ****
--- 411,417 ----
  	my $aWeb=$_[0];
  	my $aTopic=$_[1];	
  	
+     $aWeb =~ s/\//./g;
      my $cacheFileName = "$workAreaDir/$aWeb.tree";
      TWiki::Func::writeDebug( "- ${pluginName} Checking cache file: $cacheFileName" ) if $debug;
      unless (-e $cacheFileName)
***************
*** 572,578 ****
      TWiki::Func::writeDebug( "- ${pluginName}::beforeSaveHandler( $_[2].$_[1] )" ) if $debug;
      
      #Invalidate our cache for that web
!     my $cacheFileName = "$workAreaDir/$_[2].tree";
      if (-e $cacheFileName)
      	{
  	    unlink $cacheFileName;
--- 574,582 ----
      TWiki::Func::writeDebug( "- ${pluginName}::beforeSaveHandler( $_[2].$_[1] )" ) if $debug;
      
      #Invalidate our cache for that web
!     my $aWeb = $_[2];
!     $aWeb =~ s/\//./g;
!     my $cacheFileName = "$workAreaDir/$aWeb.tree";
      if (-e $cacheFileName)
      	{
  	    unlink $cacheFileName;