Hello,
After lat K2 update some of link on page gets 404 response, for ex:
cateringweselny.com.pl/dekoracje/dekoracje-sali
eaven if i try to get it by standard url ->
cateringweselny.com.pl/index.php?option=com_k2&view=itemlist&task=category&id=14&Itemid=330
it also returns 404,
but some of links works properly, for ex:
cateringweselny.com.pl/dekoracje
grafics on rows:
1st rows work fine,
2nd gest 404,
3rd works fine
all of them links to k2 iem (article)
if i turn off sh404, htacces rewrite (as in sh404 as in global configuration) links still is broken,

i try to rewrite links (delete link, and attach new to the same item) it's still gone bad.

Links from menu (menu item) are also broken.
There was no any change in code, or struture, simply, it's stop working some day.

Any idea to fix it?
Numer of broken link is hudge and i have no klue how to fix it all.

If anybody wat to see backend, please send me priv - i wil give You backend access.

If your menu links are broken, then something is wrong with your .htaccess file.
Please use the default one.

Also sh404sef will return 404 in most links since it tries to resolve the possible double content issue.

Finally if you updated K2 make sure that you are also using sh404's latest version as well.