Magento: Admin panel menu not working

Question

My magento 1.7.0.2 admin panel drop down menu was working before a day perfectly and i didn't made any change in setting and core files of admin panel.

but the problem is that my admin panel meunu is not working.i was tried out all solution like js folder permission set to 777 or 755 and i was replaced all js files with same version of Magento ver. 1.7.0.2.But its not working.

When i see in console of browser i am getting following error of js.

so how can i resolve it.I am very much stuck here.

Answer 1

I think that you have a BOM or something like that in your JS files. Try disabling the merging/minifying of the js files so you can see in which file you have the problem. If you cannot access the system>configuration>developper to set it, you can change it directly in the database.

In core_config_data, it is the key : dev/js/merge_files.