XF 2.0 dbseo url's after import from vbulletin



so I got xenforo, installed it, imported from VB 4, kept post-id's, now I have a problem with redirects.

I got dbseo for vbulletin before, now I made a log table at the import from vb for the redirects as adviced. Then I installed your default redirector, who would work with un-dbseo'ed URLs of the old vbulletin, and it does.
Next step was, I added the free redirect script from dragonbyte, to preserve my links in google. Tests showed, the inner pages of the forums work, but not the example.com/index.php, there I get the error message below in debug mode, and a 404.

An exception occurred: [ErrorException] [E_NOTICE] Undefined offset: 1 in src/addons/DBTech/Redirect/XF/Mvc/Router.php on line 183

XF::handlePhpError() in src/addons/DBTech/Redirect/XF/Mvc/Router.php at line 183
DBTech\Redirect\XF\Mvc\Router->getEcommerceMatchFromUri() in src/addons/DBTech/Redirect/XF/Mvc/Router.php at line 70
DBTech\Redirect\XF\Mvc\Router->routeToController() in src/XF/Mvc/Dispatcher.php at line 51
XF\Mvc\Dispatcher->route() in src/XF/Mvc/Dispatcher.php at line 40
XF\Mvc\Dispatcher->run() in src/XF/App.php at line 1931
XF\App->run() in src/XF.php at line 328
XF::runApp() in index.php at line 13

Any ideas?
Thank You