HTTP 404 Errors

When I click on a groups posting within my site, I get a HTTP 404 Error.  This is for all of the groups and it's postings.  What causes this??  I reuploaded my site to make sure the entire folder is uploaded onto the server, but still I get this error.  Is it because of the Orca permissions???  Please help.

Thanks,

Craig

Try removing permalinks for the groups  .....

Admin > Settings > Permalinks > Enable friendly groups permalinks = uncheck  ..... 
.

I'm really tired so I'm sorry for this.  How do you disable permalinks??  When I do this or it's already disabled....whats is plan B??? 

Thanks for the response.

CH

Orca in last dolphin versions works via permalinks.

I recommend you to reinstall orca at your site. So it assured will work.

To reinstall Orca, what is the best way?  I never reinstalled anything before.  Do I delete the entire Orca folder and replace with one from my backup?  or from a fresh install?  Anything else I need to do?

CH

Rename current orca (like backup),

after just copy fresh orca from package.

After just set all need permissions.

After just recompile language of orca.

Done

So no need work with database at all