RicardoLopez

thanks for this response I followed your recommendation
I’ve deactivated this plugin for the whole network then just activate on sites where polylang were used and this solved my problem many many thanks

Even for wordpress multisite!

this is not fully solved but at least is working properly:
the problem was Sucuri Security – SiteCheck Malware Scanner plugin that working together with WordPress MU Domain Mapping create that 404 error. now what I have to do is:
if I want to enable permalinks is deactivate all the plugins then activate permalinks, then enable all except Mu domain mapping neither sucuri plugin
once is done and verify I activate MU domain again… maintaining sucuri plugin disabled.

Any? I’ve also updated to wordpress 3.9 =(

yes, but nothing… even I contacted my host provider (rackspace) without success, they told me that even they found the same trouble when they try it to update to 3.9 in a test environment

Any? I have the same trouble with my pages ??