CiviCRM Community Forums (archive)

Our configuration: CiviCRM 4.1.2 on shared hosting at ANHosting/MidPhase, with Drupal 7.14, PHP 5.3.13 and MySQL 5.1.63-cll.

I'm trying to upgrade CiviCRM to 4.1.5.  When running the upgrade command (/civicrm/upgrade?reset=1), it originally reported the error shown below.

I asked the hosting company's tech support to check the logs and see if they could fix it.

They reported:
I've worked out all all the errors that are coming through the logs
except for the one that appears to be the cause of the issues you're seeing:
Premature end of script headers: index.php

The closest report to this that I've found is http://forum.civicrm.org/index.php?topic=23593.0 (when upgrading from 4.0.7 to 4.1)
The solution there was to downgrade to PHP 5.2.17, but I understand that PHP 5.3 should be used with CiviCRM 4.1, so that doesn't seem right in this case.

Do you have any suggestions what should be checked or changed?
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Internal Server Error

The server encountered an internal error or misconfiguration and was unable to
complete your request.

Please contact the server administrator, ... and inform
them of the time the error occurred, and anything you might have done that may
have caused the error.

More information about this error may be available in the server error log.

Additionally, a 500 Internal Server Error error was encountered while trying to
use an ErrorDocument to handle the request.