build modules with server err

Hi,

I build modules in a long time, and then it turn out to show server error as follows, how can I build it without an err?

I use drupal 6

Thanks,

ruichen

Server error
The website encountered an error while retrieving http://65.161.51.129/0_supertex_beta/?q=admin/build/modules/list/confirm. It may be down for maintenance or configured incorrectly.
Here are some suggestions:
Reload this webpage later.
HTTP Error 500 (Internal Server Error): An unexpected condition was encountered while the server was attempting to fulfill the request.