System.Data.SQLite was working perfectly, then i installed FirebirdClient 2.5.1 and FirebirdDDEXProvider 2.0.4 (as outlined inthe included readme). As a result, neither SQLite nor Firebird were working (the Firebird UI also crashes upon selecting anything, so same error here). So i removed FirebirdSQL and undid my changes to machine.config and the registry, but SQLite still didn't work. I removed & reinstalled SQLite, no change. I removed SQLite, called devenv with the /reset... switch, reinstalled SQLite, still doesn't work. Then i completely deinstalled VS2008Pro, reinstalled, installed SQLite, still broken.
<edit> I forgot, i'm using VS2008 Professional on Windows XP x64 with all updates availiable. SQLite is 1.0.56.0(setup.exe)