dashlets make hundreds of requests when I edit the filter

My instalation has been recently upgraded from SugarCE. When the user edit the “My Leads” dashlet and save the home page is always making hundreds of requests to:

https://crm_pruebas.udima/index.php?action=DynamicAction&DynamicAction=displayDashlet&session_commit=1&module=Home&to_pdf=1&id=a26cc49b-0909-6c4e-c5f7-54afc56e5182

If I “reset Homepage” of the user everything works OK, but when they edit the dashlet the same occur.

Please help.

I solved it uninstalling all my spanish language packs

Spanish (Spain) Language Pack
5.1.0a
5.1.0b
5.2.0l
5.5.4
6.1.1

and later reinstalling the 6.1.1

Now I can edit dashlets configuration