So this happened to me and my friend, he was level 20 1st prestige and then his game crashed, when he got back on, he was level 17 and lost 30k xp, for me, simply my xp didnt count and i kept getting this:
Eventually got to like -37k xp, i restarted my game and i had lost all of it :/ kinda disappointing.
Intel Core i5 2500k @ 4.5GHz
8gb DDR3 G.Skill Sniper RAM
Asus EAH6950 2GB
2TB Seagate Barracuda
Windows 7 Ultimate 64-bit
Black Ops doesn't save stats locally and instead syncs the stats into Steam Cloud when you are closing the game or idle in the menu. They should make it sync more often otherwise things like this will happen.
Donate: BTC: 1GEny3y5tsYfw8E8A45upK6PKVAEcUDNv9
Handy Tools/Hacks: Extreme Injector v3.6.1*NEW* Windows 10 compatible!
A powerful and advanced injector in a simple GUI.
Can scramble DLLs on injection making them harder to detect and even make detected hacks work again!
Minion Since: 13th January 2011 Moderator Since: 6th May 2011 Global Moderator Since: 29th April 2012 Super User/Unknown Since: 23rd July 2013 'Game Hacking' Team Since: 30th July 2013