Error 324 (net::ERR_EMPTY_RESPONSE) Using Drupal 7 and Clean theme and installed Views module. Everything is worked but now, when click Save in Views get this error:

''Error 324 (net::ERR_EMPTY_RESPONSE): The server closed the connection without sending any data.''

My site is on MAMP local. Whats this problem?
clearing cache might help:

truncate table cache;