The latest release contains a debug-statement which probably should have been removed. On line 131 of menu_block_split.module it says:
var_dump($parent);
This results in something like:
string(2) "44"
at the top of every page.

Removing the call to var_dump fixes this.

Comments

pvanderspek’s picture

pvanderspek commented
Status: Active » Closed (duplicate)

I'm sorry. I overlooked an earlier issue reporting the same problem and solution. I'll mark this as a duplicate of http://drupal.org/node/292222