Page not found when I go to "admin/build/blocks2"

Hello,

after installing your module I have this error on "admin/build/blocks2"

Page not found

Notice: Undefined index: body in views_handler_filter->accept_exposed_input() (line 547 of /testsite/sites/all/modules/views/handlers/views_handler_filter.inc).
Notice: Undefined index: format in views_handler_filter->accept_exposed_input() (line 547 of /testsite/sites/all/modules/views/handlers/views_handler_filter.inc).
Notice: Undefined index: module in views_handler_filter->accept_exposed_input() (line 547 of /testsite/sites/all/modules/views/handlers/views_handler_filter.inc).
Notice: Undefined index: custom in views_handler_filter->accept_exposed_input() (line 547 of /testsite/sites/all/modules/views/handlers/views_handler_filter.inc).
Notice: Undefined index: visibility in views_handler_filter->accept_exposed_input() (line 547 of /testsite/sites/all/modules/views/handlers/views_handler_filter.inc).
Notice: Undefined index: pages in views_handler_filter->accept_exposed_input() (line 547 of /testsite/sites/all/modules/views/handlers/views_handler_filter.inc).
Notice: Undefined index: theme in views_handler_filter->accept_exposed_input() (line 547 of /testsite/sites/all/modules/views/handlers/views_handler_filter.inc).
Notice: Undefined index: region in views_handler_filter->accept_exposed_input() (line 547 of /testsite/sites/all/modules/views/handlers/views_handler_filter.inc).
Notice: Undefined index: cache in views_handler_filter->accept_exposed_input() (line 547 of /testsite/sites/all/modules/views/handlers/views_handler_filter.inc).

The requested page "/testsite/admin/build/blocks2" could not be found.

Thanks for any help!
Frank