I click "upload file" and "config" window opens

[erika_conn]

Have you ever heard of that?  It was working well for about a year and then this.  Out of the blue.
http://ceconn.com/photo_gallery

I read the troubleshooter and made the recommended changes. 

Go to your coppermine page and log in as admin
Go to the config screen
Scroll to the bottom of the page
Expand the "Maintenance settings" section by clicking on it
Enable debug mode for everyone
Leave display of notices switched off
Save the new settings by clicking on "Save new configuration"
Go to the "groups" panel
Set the upload form configuration for all groups to "Single file uploads only" (set File upload boxes to "1", URI upload boxes to "0" and No. of boxes to "fixed")
Save your new settings

I even created a new user and password.  Didn't matter.  Nothing changed.  If you want, I can send the debug info.

The long and short of it is that I can't upload and neither can my registered users.  What could be doing that?

[Joachim Müller]

I read the troubleshooter and made the recommended changes.

Re-read it. It says what you need to do when requesting help on the support board.

I even created a new user and password.

That's nice, but won't help you. Would help us if you posted the test user account. That's why you're suppossed to create it in the first place .

[erika_conn]

OK, my new user account is :    testing
password:                              testing

I hope this is what you needed

[Joachim Müller]

Must be some file corruption. Re-upload all core files from a fresh coppermine package as if you were performing an upgrade.

[erika_conn]

I guess that's what it was because eveything is fine now.  Thank you.