TYPO3 Core

So do i.

Same problem on 4.7.10. Firebug shows

"NetworkError: 500 Internal Server Error - http://localhost/t3demo/typo3/alt_clickmenu.php?table=%2Fvar%2Fwww%2Ft3demo%2Ffileadmin%2Ftemplates%2Findex.html&uid=&listFr=1&enDisItems=&backPath=..%2F..%2F..%2F%7C8017f9b225&addParams=&ajax=1" 

Hi,

my problem was, I had installed a version 6.0.2 of government package and updated later to 6.0.4. In 6.0.2 there was a version of tt_news included, which has several fatal errors.
The problem was in filelist there was the above mentioned 500 error with alt_clickmenu.php. No error in backend. I just not looked in apache error file.

In
typo3conf/ext/tt_news/cm1/class.tx_ttnewscatmanager_cm1.php line 274
typo3conf/ext/tt_news/pi/class.tx_ttnews_wizicon.php line 85

In version 6.0.4 this error are fixed. But as I updated, the ext tt_news was not updated.

So for me it is no problem left.

@Pascal: perhaps it is also a fatal error for some extension in yout installation? Is there are error in your apache error log?

bye
Martin