I tried changing the memory limit to 32M, as recommended here but still does not work: http://forums.b2evolution.net/viewtopic.php?t=13975

I see from the forum that this is a very common problem with the upgrade to 2.x. Now I wish I had not performed the upgrade at all. =(

Grab a fresh copy of the zip and re-upload your files .... seems to work like magic in some cases ;)

¥

Thank you for your reply.

I tried what you suggested - downloaded a fresh copy of 2.4.2 and re-installed. Same error. =(

Any other suggestions?

$BlogCache = & get_Cache( 'BlogCache' );
var_dump( gettype($BlogCache) );

Return

string(6) "object" 

In inc/_core/_class4.funcs.php

case 'BlogCache':
		load_class( 'collections/model/_blogcache.class.php' );
		$BlogCache = new BlogCache(); // COPY (FUNC)
		var_export($BlogCache);
		return $BlogCache;

Return

class blogcache {
  var $dbtablename = 'T_blogs';
  var $dbprefix = 'blog_';
  var $dbIDname = 'blog_ID';
  var $objtype = 'Blog';
  var $cache = 
  array (
  );
  var $shadow_cache = NULL;
  var $DataObject_array = 
  array (
  );
  var $current_idx = NULL;
  var $load_all = false;
  var $all_loaded = false;
  var $name_field = NULL;
  var $order_by = 'blog_ID';
  var $none_option_text = 'No blog';
  var $cache_siteurl_abs = 
  array (
  );
  var $cache_urlname = 
  array (
  );

Before and after applying this patch from blueyed http://forums.b2evolution.net/viewtopic.php?t=12727#64538

This is a PHP4 problem...

Any suggestions on how to resolve this issue? I assume I need to move the domain to a server with php5?

I moved the domain to a different server and now it works fine. Thank you, everyone, for your help.

http://www.healthsciencenews.com

Good luck with your new server ;)