404 error and invalid argument

I installed MJ 1.2.5.1 on my up-to-date Joomla 1.5.X web today. PHP 5.2.17

Everything went fine with no errors. I updated the settings in the MJ control panel and when I clicked APPLY I received an error 404. I tried to enter the back end again and a 404 error popped up. I tried the front end...404 error. While researching the error...I tried to access the web site via my iphone - it worked! Went back to my computer - now the front end and back end come up - with no errors. I can access everything - press apply - all working. Front end is fine! Now I go to my iphone - and the only thing I get is my home page with an error at the top: Warning: invalid argument supplied for each () in /home/....../modules/mj_menu/helper.php on line 81.

Can someone help me? Thanks!

starstate wrote:

I don't know reason for 404 error, but above message means that Mobile Menu module is set to display empty (or not existing) menu.

Thank you so much. That was the issue. The 404 error threw me so I just need it had to be something related to it. HA! It wasn't. I appreciate your quick reply. I hooked up my menu and it works. Mobile Joomla is awesome! I just went pro. THANKS AGAIN.

I am having the same problem, invalid argument on line 81 of helper.php in the mod_mj_menu folder.

What do you mean "I hooked up my menu..."?

Can you please help?

Thanks.

I figured out the answer to my own question.

I had to go into the Modules under Extensions and I found the "Mobile Menu" module and I had to specify what menu I wanted it to display.

I have several menus so I assume that is why I had to choose it.

the same 404 error dont knw for what..?

soniasingh - What problem are you having?

dont know but having some tough problem and i m new to joomla