Error: couldn't load tree: undefined

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I am having the same problem. I found this thread and followed these instructions and it worked. However, I needed to put my old index.html page back for a while whilst I made some adjustments.

I repeated the process when I was ready to swap back again….moved the old index.html and renamed my index.php (it was a copy) but now I’m getting a different message in the Response tab:

<b>Warning</b>: require(./wordpress/wp-blog-header.php) [function.require]: failed to open stream: No such file or directory in <b>/home/content/43/10338043/html/index.php</b> on line <b>17</b>

<b>Fatal error</b>: require() [function.require]: Failed opening required ‘./wordpress/wp-blog-header.php’ (include_path=’.:/usr/local/php5_3/lib/php’) in <b>/home/content/43/10338043/html/index.php</b> on line <b>17</b>

Any ideas?

http://wordpress.org/extend/plugins/advanced-page-manager/