"Install" error message

HELP, this is a major problem. For the past couple of days I have been getting an Omeka screen (similar to the admin login screen) when first going to the url, with a box that prompts me that I haven't installed Omeka. When I clicked on the hypertext to take me to "install" I get a screen that says I have installed, and that I could remove my "install" directory.

I went to the FTP on my Dreamhost account, deleted the "install" directory folder and that seems to have made my entire site vanish. At my url there is an error message:

Warning: Omeka_Core::include_once(/mnt/local/home/tjhangen/digitalworcester.org/install/notify.php) [omeka-core.include-once]: failed to open stream: No such file or directory in /mnt/local/home/tjhangen/digitalworcester.org/application/libraries/Omeka/Core.php on line 322

Warning: Omeka_Core::include_once() [function.include]: Failed opening '/mnt/local/home/tjhangen/digitalworcester.org/install/notify.php' for inclusion (include_path='/mnt/local/home/tjhangen/digitalworcester.org/application/libraries:/mnt/local/home/tjhangen/digitalworcester.org/application/models') in /mnt/local/home/tjhangen/digitalworcester.org/application/libraries/Omeka/Core.php on line 322

What did I do, and how can I fix it? And back to the original problem, was my installation outdated?

Are you still experiencing this problem? Here's what happened w/ the software (somewhat technical):

When you access Omeka, it uses the database to load information for each page. There's a table in the database that Omeka checks for, and if it's unable to do access it, it acts as though you haven't installed the software. However, once you click the link to install Omeka, it realizes that you've already installed it and you get the message about removing the directory.

When you upgraded Omeka, did you deactivate your plugins first? My hunch is that you had an old plugin from 0.9 that changed in 0.10. This could potentially cause the error to occur.

The solution involves deleting the data in the plugins table of your database. By doing so, Omeka will no longer try to run the broken plugin code.

Depending on what plugins you're using, you may be able to just download & upgrade those (http://omeka.org/add-ons/plugins/) and get it up-and-running without having to go into the database.

1/19 - the site is back without my having done anything. Which makes me worry it could happen again. Or wonder why it did that in the first place?

In my FTP I have a folder for Omeka, so I guess that's my latest version.

Are you recommending I deactivate my plugins, upload Omeka 1.0, and then upgrade my plugins?

Happy to hear that it's running again. You're OK not upgrading unless you're looking for the features included in 0.10. We recommend it, however the version shouldn't affect the problem you were experiencing.

It's likely that your MySQL server wasn't working properly, which was confusing Omeka into thinking it wasn't installed. Which would explain why it's working OK now (if MySQL is functioning properly).

It's difficult to debug your problem beyond assuming that there was a problem w/ MySQL. It shouldn't happen again, unless dreamhost is having issues. That's my hunch, at least.