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java.lang.IllegalArgumentException: invalid transport at net.java.sip.communicator.impl.protocol.sip.SipStackSharing.getJainSipProvider(SipStackSharing.java:485) at net.java.sip.communicator.impl.protocol.sip.ProtocolProviderServiceSipImpl.getJainSipProvider(ProtocolProviderServiceSipImpl.java:1689) at net.java.sip.communicator.impl.protocol.sip.ProtocolProviderServiceSipImpl.getDefaultJainSipProvider(ProtocolProviderServiceSipImpl.java:2068) at net.java.sip.communicator.impl.protocol.sip.SipMessageFactory.createInviteRequest(SipMessageFactory.java:738) at net.java.sip.communicator.impl.protocol.sip.SipMessageFactory.createInviteRequest(SipMessageFactory.java:878) at net.java.sip.communicator.impl.protocol.sip.CallSipImpl.invite(CallSipImpl.java:464) at net.java.sip.communicator.impl.protocol.sip.OperationSetBasicTelephonySipImpl.createOutgoingCall(OperationSetBasicTelephonySipImpl.java:199) at net.java.sip.communicator.impl.protocol.sip.OperationSetBasicTelephonySipImpl.createCall(OperationSetBasicTelephonySipImpl.java:141) at net.java.sip.communicator.service.protocol.media.AbstractOperationSetBasicTelephony.createCall(AbstractOperationSetBasicTelephony.java:122) at net.java.sip.communicator.impl.gui.main.call.CallManager.internalCall(CallManager.java:2715) at net.java.sip.communicator.impl.gui.main.call.CallManager.access$900(CallManager.java:60) at net.java.sip.communicator.impl.gui.main.call.CallManager$CreateCallThread.run(CallManager.java:2596)