What did I do? Please Help!!!

My admin sign in screen is blank!!:( I have read all the posts that I can find regarding this issue and none of them have helped.

I've tried fix_cache_key.php and it says no changes needed.

I've turned on Strict Error Reporting and I am not getting any errors reported.

My Log file shows the following:
[23-May-2011 06:09:55] PHP Warning: session_start() [<a href='function.session-start'>function.session-start</a>]: Cannot send session cookie - headers already sent by (output started at /home//public_html/zencart/zc_admin/includes/classes/logger.php:127) in /home//public_html/zencart/includes/functions/sessions.php on line 114
[23-May-2011 06:09:55] PHP Warning: session_start() [<a href='function.session-start'>function.session-start</a>]: Cannot send session cache limiter - headers already sent (output started at /home//public_html/zencart/zc_admin/includes/classes/logger.php:127) in /home//public_html/zencart/includes/functions/sessions.php on line 114
[23-May-2011 06:09:56] PHP Warning: Cannot modify header information - headers already sent by (output started at /home//public_html/zencart/zc_admin/includes/classes/logger.php:127) in /home//public_html/zencart/zc_admin/includes/init_includes/init_templates.php on line 55
[23-May-2011 06:09:57] PHP Warning: Cannot modify header information - headers already sent by (output started at /home//public_html/zencart/zc_admin/includes/classes/logger.php:127) in /home//public_html/zencart/zc_admin/includes/functions/general.php on line 21

Prior the problem, I made NO changes to any file!
BUT, I did attempt to move zen cart to the public_html folder.

I'm using Dreamweaver for my FTP.

The way that I attempted this is by copying the entire zencart directory to the public_html directory on my local machine. This left me with TWO copies of zen cart (one in public_html and one in the original location)
Then I used Dreamweaver to upload the entire site.

:oops: Unfortunately, I did not change the confige.php files that needed edited when moving the files. :oops:

The problem came up when trying to navigate to zc_admin/index.php in either of the copies.

I then deleted all the files in the NEW copy in public_html, so that leaves me back to the original version only... but still no go.... blank screen

I have also cleared all entries in the zen_sessions table.

PLEASE, help!! :cry:

Thanks So Much:frusty::frusty::frusty:

I would start by using a proper FTP program to replace the files... Sounds much like a corrupted file. Something free like Core FTP or Filezilla will work just file.

~Melanie