Modified Data? Won't let me play DayZ?

[Player_01 1]

When I join any server (stable or experimental) it says "Player_01 uses modified data file - C:\Users\Jake\Appdata\local\DayZ\MPMissionsCache\__cur_mp.pbo"

 

I have no idea what this means or how to fix it, I tried both stable and experimental, uninstalling and re installing, and even restarting my computer.

 

I have never touched my DayZ file and this just popped up today. I need help please, anyone with knowledge on this.

 

 

(Click on photo for view)

Edited February 14, 2014 by Player_01

[namco-4 50]

It happens. Just delete the "MPMissionsCache" folder and validate files on steam. That should do the trick.

Edited February 14, 2014 by namco-4

[Player_01 1]

It happens. Just delete the "MPMissionsCache" folder and validate files on steam. That should do the trick.

 

It worked perfectly. Thanks for your help!

[kavemandayz 14]

How do we prevent this from happening, though?  It's happening to me every other day, now, and I don't know why.  I run DayZ straight from steam, and don't touch anything.

[RANDY_HORTON 0]

When i do this it says noting is in the MPmissioncache, this means the dayz folder says there is no mpmission cache meaning i cannot delete. can someone help me?