Sorry for the duplicate post, original posted in programming but it should be here. Anybody encountered this? Fatal error: Cannot redeclare theme_uc_catalog_browse() (previously declared in... Happened after the server was migrated. Site is Drupal with Ubercart. Found only one reference to it at the Ubercart forum and that guy fixed it by reinstalling Ubercart module. When I do that it works for a day or so and then starts failing again.
I had this same problem. I focused on the "theme" in the error message, changed my site to Garland, and then reloaded the page. That worked. Thus emboldened, I changed the theme back to the one I was using for the site. I was amazed to see that the page loaded correctly. No idea if this is a long-term fix, but at least for now my site is back to normal.