Module development and code questions

I've got cron.php running via a cron job and it gives me an include error for bootstrap.inc saying it's not there when I know it is. Any idea as to why this is happening?

There are Drupal-4.7.3, views-4.7.0 and userpoints-4.7.0 (and the cvs-version). By means of views made the kind of the first page, similarly standard, but with additional sorting a material by "Node: Last Updated Time DESC" and on "Node: Created Time DESC".
Question: how to add here sorting by userpoints the author of a material?
P.S. Sorry for my bad English.

When an user try to download a file
drupal reply with access denied.

Where is the problem ?

I thought when I edit a node I can choose my custom menu in the navigation window. Did something happen to my drupal or is it a bug?

Now when i edit a page it saves it into the navigation window without giving me the choice of my custom menu and I have to go through the admin-menu to edit the changed page it into my custom menu. Is this possible?

T

How or where can I altert the text in tabs? For ecample to change from the "Play" tab to "Play Trailer" tab.
Also is it somehow possible to hide tabs on a regular page?

Any hints?

Tmas

I've seen the file upload system api info here: http://api.drupal.org/api/4.7/group/file

But it does not really explain how the whole system works.
I wrote this module: http://drupal.org/project/fileshare