Problem with Admin CP

[warstrike]

hello brothers,
am getting an erorr when trying to view admin cp index, can still see mod cp and everything else is working fine, please help

here is error image:

[.m.]

^ the error message is clear. it is saying ./inc/datahandlers/login.php file is not available or not readable
check it through file manager or ftp client

[warstrike]

hi brother,
now it says
A valid method was not supplied to the data handler.

[StefanT]

Are you really using MyBB 1.6.x? That file was added with 1.8.0.

[warstrike]

Are you really using MyBB 1.6.x? That file was added with 1.8.0.

i just deleted my forum and upgraded to 1.8.0 the guy that said to change my login.php messed up my whole forum, couldnt post or anything before it was just the admincp that was messed up

[.m.]

^ well, if you were using MyBB 1.6.x then how you got the referred error (failed to open file ..)