Try http://pubsvn.ez.no/community/trunk/extension/developer on latest 3.9.

Accessing developer/treefetchbuilder with admin user account, gives Kernel error 1:

The requested page could not be displayed. (1)

The system is unable to display the requested page because of security issues.

Possible reasons:

    * Your account does not have the proper privileges to access the requested page.
    * The requested page does not exist. Try changing the URL.

I suspect this has something to do with security issues fixed in http://ez.no/developer/news/ez_publish_security_fixes_3_9_3_and_3_8_9, but the developer module does not define or use any policy functions so shouldn't be affected by the fix. An empty array in functions key of a view's definition should be seen as 'no functions' for BC.

After removing the lines

 'functions' => array( ),

from module.php, it works again as supposed.