IllegalArgumentException thrown with tomcat 7

[tim-oe]

using:
tomcat 7.0.57
java version "1.8.0_20"
Java(TM) SE Runtime Environment (build 1.8.0_20-b26)
Java HotSpot(TM) 64-Bit Server VM (build 25.20-b23, mixed mode)

CATALINA_OPTS=-javaagent:C:\java\jta\jlta-agent.jar=6060

this is the initial exception:
+ CategoryInfo : NotSpecified: (java.lang.IllegalArgumentException:String) [], RemoteException
+ FullyQualifiedErrorId : NativeCommandError

at org.jlta.internal.objectweb.asm.ClassReader.<init>(ClassReader.java:167)
at org.jlta.internal.objectweb.asm.ClassReader.<init>(ClassReader.java:153)
at org.jlta.agent.ThreadClassTransformer.transform(ThreadClassTransformer.java:37)
at sun.instrument.TransformerManager.transform(TransformerManager.java:188)
at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:428)
at sun.instrument.InstrumentationImpl.retransformClasses0(Native Method)
at sun.instrument.InstrumentationImpl.retransformClasses(InstrumentationImpl.java:144)
at org.jlta.agent.AgentInit.initialize(AgentInit.java:56)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at org.jlta.agent.Agent.initialize(Agent.java:58)
at org.jlta.agent.Agent.premain(Agent.java:18)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:483)
at sun.instrument.InstrumentationImpl.loadClassAndStartAgent(InstrumentationImpl.java:386)
at sun.instrument.InstrumentationImpl.loadClassAndCallPremain(InstrumentationImpl.java:401)