Getting an error with Ragnarok online

[CffOmg]

Problem signature:
Problem Event Name: BEX
Application Name: Phantasm RO.exe
Application Version: 0.0.0.0
Application Timestamp: 4f833529
Fault Module Name: Phantasm RO.exe
Fault Module Version: 0.0.0.0
Fault Module Timestamp: 4f833529
Exception Offset: 000f29b4
Exception Code: c0000409
Exception Data: 00000000
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 1033
Additional Information 1: 26a6
Additional Information 2: 26a6f7ea6a52d23c3e4b50578d727ed9
Additional Information 3: 702b
Additional Information 4: 702b00a8dc7dddd7f69c2b84418e1c88

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I'm getting these errors since last night. Can someone help me please?