环信sdk集成问题

启动后，报这个log异常。请问有问题吗？

05-04 19:46:18.659 26482-26482/com.talkweb.cloudcampus I/dalvikvm﹕ Could not find method com.easemob.chat.EMVoiceCallManager.getInstance, referenced from method com.easemob.chat.EMChatManager.init
05-04 19:46:18.659 26482-26482/com.talkweb.cloudcampus I/dalvikvm﹕ Could not find method com.easemob.chat.EMVoiceCallManager.getInstance, referenced from method com.easemob.chat.EMChatManager.addCallStateChangeListener
05-04 19:46:18.659 26482-26482/com.talkweb.cloudcampus I/dalvikvm﹕ Could not find method com.easemob.chat.EMVoiceCallManager.getInstance, referenced from method com.easemob.chat.EMChatManager.addVoiceCallStateChangeListener
05-04 19:46:18.659 26482-26482/com.talkweb.cloudcampus I/dalvikvm﹕ Could not find method com.easemob.chat.EMVoiceCallManager.getInstance, referenced from method com.easemob.chat.EMChatManager.answerCall
05-04 19:46:18.659 26482-26482/com.talkweb.cloudcampus I/dalvikvm﹕ Could not find method com.easemob.chat.EMVoiceCallManager.getInstance, referenced from method com.easemob.chat.EMChatManager.endCall
05-04 19:46:18.669 26482-26482/com.talkweb.cloudcampus I/dalvikvm﹕ Could not find method com.easemob.chat.EMVoiceCallManager.getInstance, referenced from method com.easemob.chat.EMChatManager.makeVideoCall
05-04 19:46:18.669 26482-26482/com.talkweb.cloudcampus I/dalvikvm﹕ Could not find method com.easemob.chat.EMVoiceCallManager.getInstance, referenced from method com.easemob.chat.EMChatManager.makeVoiceCall
05-04 19:46:18.679 26482-26482/com.talkweb.cloudcampus I/dalvikvm﹕ Could not find method com.easemob.chat.EMVoiceCallManager.getInstance, referenced from method com.easemob.chat.EMChatManager.rejectCall
05-04 19:46:18.679 26482-26482/com.talkweb.cloudcampus I/dalvikvm﹕ Could not find method com.easemob.chat.EMVoiceCallManager.getInstance, referenced from method com.easemob.chat.EMChatManager.removeCallStateChangeListener