left4dead2 video partition currupt or wave not seen before

[vjm]

got this game on hardrive when using agbx360 get this message in yellow (video partition does not match known data (could be currupt or wave not seen before)stealth status is uncertain.then it starts verification,all crc then match up and says verification was successful,stealth passed which is good but when i try to re verifie i still get the same message in yellow (video partition does not match known data (could be currupt or wave not seen before)stealth status is uncertain)but again passes when doing verification,is this game safe to go on live.
using agbx360 v1.0.2
would of thought once verified and stealth passed the yellow warning message would have gone when checking again

thanks in advance for any info

[Acheron]

It's fine m8. L4D2 is wave 5 and abgx doesn't currently support wave 5.