Categroy view switch gives 404

Hi there,
I just did a test on my local installation upgrading from version 3.11.2 to version 3.12.6 and if I try to switch the view on my category pages from default (day) to anything else (month or list) I get a 404.
I tried deactivating all plugins other plugins with no success, I also switched to twenty fifteen theme, also no success.
I updated the permalinks, no success.
Only when I switch to default link structure (no pretty slugs) the switching starts to work.

Adding the recomended snippets and the query tribe_query_debug=true, the output is as below.

Can you help me with this?

Thanks a lot in advance!
Eva

<Tribe Events Query>

object(WP_Query)#318 (53) {
[“query”]=>
array(1) {
[“tribe_events_cat”]=>
string(20) “arte-emergente/lista”
}
[“query_vars”]=>
array(51) {
[“tribe_events_cat”]=>
string(5) “lista”
[“error”]=>
string(0) “”
[“m”]=>
string(0) “”
[“p”]=>
int(0)
[“post_parent”]=>
string(0) “”
[“subpost”]=>
string(0) “”
[“subpost_id”]=>
string(0) “”
[“attachment”]=>
string(0) “”
[“attachment_id”]=>
int(0)
[“name”]=>
string(0) “”
[“static”]=>
string(0) “”
[“pagename”]=>
string(0) “”
[“page_id”]=>
int(0)
[“second”]=>
string(0) “”
[“minute”]=>
string(0) “”
[“hour”]=>
string(0) “”
[“day”]=>
int(0)
[“monthnum”]=>
int(0)
[“year”]=>
int(0)
[“w”]=>
int(0)
[“category_name”]=>
string(0) “”
[“tag”]=>
string(0) “”
[“cat”]=>
string(0) “”
[“tag_id”]=>
string(0) “”
[“author”]=>
string(0) “”
[“author_name”]=>
string(0) “”
[“feed”]=>
string(0) “”
[“tb”]=>
string(0) “”
[“paged”]=>
int(0)
[“comments_popup”]=>
string(0) “”
[“meta_key”]=>
string(0) “”
[“meta_value”]=>
string(0) “”
[“preview”]=>
string(0) “”
[“s”]=>
string(0) “”
[“sentence”]=>
string(0) “”
[“fields”]=>
string(0) “”
[“menu_order”]=>
string(0) “”
[“category__in”]=>
array(0) {
}
[“category__not_in”]=>
array(0) {
}
[“category__and”]=>
array(0) {
}
[“post__in”]=>
array(0) {
}
[“post__not_in”]=>
array(0) {
}
[“tag__in”]=>
array(0) {
}
[“tag__not_in”]=>
array(0) {
}
[“tag__and”]=>
array(0) {
}
[“tag_slug__in”]=>
array(0) {
}
[“tag_slug__and”]=>
array(0) {
}
[“post_parent__in”]=>
array(0) {
}
[“post_parent__not_in”]=>
array(0) {
}
[“author__in”]=>
array(0) {
}
[“author__not_in”]=>
array(0) {
}
}
[“tax_query”]=>
object(WP_Tax_Query)#5016 (6) {
[“queries”]=>
array(1) {
[0]=>
array(5) {
[“taxonomy”]=>
string(16) “tribe_events_cat”
[“terms”]=>
array(1) {
[0]=>
string(5) “lista”
}
[“field”]=>
string(4) “slug”
[“operator”]=>
string(2) “IN”
[“include_children”]=>
bool(true)
}
}
[“relation”]=>
string(3) “AND”
[“table_aliases”:protected]=>
array(0) {
}
[“queried_terms”]=>
array(1) {
[“tribe_events_cat”]=>
array(2) {
[“terms”]=>
array(1) {
[0]=>
string(5) “lista”
}
[“field”]=>
string(4) “slug”
}
}
[“primary_table”]=>
NULL
[“primary_id_column”]=>
NULL
}
[“meta_query”]=>
bool(false)
[“date_query”]=>
bool(false)
[“post_count”]=>
int(0)
[“current_post”]=>
int(-1)
[“in_the_loop”]=>
bool(false)
[“comment_count”]=>
int(0)
[“current_comment”]=>
int(-1)
[“found_posts”]=>
int(0)
[“max_num_pages”]=>
int(0)
[“max_num_comment_pages”]=>
int(0)
[“is_single”]=>
bool(false)
[“is_preview”]=>
bool(false)
[“is_page”]=>
bool(false)
[“is_archive”]=>
bool(true)
[“is_date”]=>
bool(false)
[“is_year”]=>
bool(false)
[“is_month”]=>
bool(false)
[“is_day”]=>
bool(false)
[“is_time”]=>
bool(false)
[“is_author”]=>
bool(false)
[“is_category”]=>
bool(false)
[“is_tag”]=>
bool(false)
[“is_tax”]=>
bool(true)
[“is_search”]=>
bool(false)
[“is_feed”]=>
bool(false)
[“is_comment_feed”]=>
bool(false)
[“is_trackback”]=>
bool(false)
[“is_home”]=>
bool(false)
[“is_404”]=>
bool(false)
[“is_comments_popup”]=>
bool(false)
[“is_paged”]=>
bool(false)
[“is_admin”]=>
bool(false)
[“is_attachment”]=>
bool(false)
[“is_singular”]=>
bool(false)
[“is_robots”]=>
bool(false)
[“is_posts_page”]=>
bool(false)
[“is_post_type_archive”]=>
bool(false)
[“query_vars_hash”:”WP_Query”:private]=>
string(32) “894efd889d57d72229ea6449d2d76f45”
[“query_vars_changed”:”WP_Query”:private]=>
bool(false)
[“thumbnails_cached”]=>
bool(false)
[“stopwords”:”WP_Query”:private]=>
NULL
[“compat_fields”:”WP_Query”:private]=>
array(2) {
[0]=>
string(15) “query_vars_hash”
[1]=>
string(18) “query_vars_changed”
}
[“compat_methods”:”WP_Query”:private]=>
array(2) {
[0]=>
string(16) “init_query_flags”
[1]=>
string(15) “parse_tax_query”
}
[“tribe_is_event”]=>
bool(false)
[“tribe_is_multi_posttype”]=>
bool(false)
[“tribe_is_event_category”]=>
bool(true)
[“tribe_is_event_venue”]=>
bool(false)
[“tribe_is_event_organizer”]=>
bool(false)
[“tribe_is_event_query”]=>
bool(true)
[“tribe_is_past”]=>
bool(false)
}
Query Results:

array(0) {
}
is_404() =

bool(false)
</Tribe Events Query>

https://www.ads-software.com/plugins/the-events-calendar/