K790i Camera Problem (Please help)

Hi All
I have K790i phone. When I start my camera, a notice is displayed on the screen that "Another application is running. Close itand then start the camera".
I have flashed my phone but the problem still persists. I have applied the camera drivers also but nothing happened.
I will appreciate any help.
Thanks in advance.

Must flash File System, CDA and Main.

Make a full flash, like senter said.

Nice day

it seems a little problem. what did you use? i mean XS++ of jdflasher?
if it is JDflasher, you have to do a simple thing. after adding the cam driver, you must go back step by step & exit from the phone file system.

or jdflasher or xs++, YOU MUST stop step by step the flashing, or the phone will recognize that the camdrivers are in use.

Thanks everyone. I will try flashing CDA too. I did not do that. BTW I used XS++.
Thank you all.