MATLAB R2015a ROS Initialization Problem

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Hello Everyone,

Iam trying to use newest version of MATLAB R2015a with Robotics System Toolbox. My computer has 64-bit Windows 7 Professional operating system. When I start with Getting Started with ROS tutorial and type the first command

rosinit

I got the error below and I tried many things and could not manage to solve it

Initializing ROS master on http://10.36.54.243:11311/ . Exception in thread "ROS Executor Thread" org.ros.exception.RosMessageRuntimeException: java.lang.ClassNotFoundException: std_msgs.uint32 at org.ros.internal.message.definition.MessageDefinitionReflectionProvider.get(MessageDefinitionReflectionProvider.java:66) at org.ros.internal.message.Md5Generator.generate(Md5Generator.java:44) at org.ros.internal.message.Md5Generator$1.variableValue(Md5Generator.java:61) at org.ros.internal.message.definition.MessageDefinitionParser.parseField(MessageDefinitionParser.java:172) at org.ros.internal.message.definition.MessageDefinitionParser.parse(MessageDefinitionParser.java:107) at org.ros.internal.message.Md5Generator.generateText(Md5Generator.java:86) at org.ros.internal.message.Md5Generator.generate(Md5Generator.java:49) at org.ros.internal.message.Md5Generator$1.variableValue(Md5Generator.java:61) at org.ros.internal.message.definition.MessageDefinitionParser.parseField(MessageDefinitionParser.java:172) at org.ros.internal.message.definition.MessageDefinitionParser.parse(MessageDefinitionParser.java:107) at org.ros.internal.message.Md5Generator.generateText(Md5Generator.java:86) at org.ros.internal.message.Md5Generator.generate(Md5Generator.java:49) at org.ros.internal.message.topic.TopicDescriptionFactory.newFromType(TopicDescriptionFactory.java:36) at org.ros.internal.node.DefaultNode.newPublisher(DefaultNode.java:280) at org.ros.internal.node.RosoutLogger. (RosoutLogger.java:41) at org.ros.internal.node.DefaultNode.start(DefaultNode.java:195) at org.ros.internal.node.DefaultNode.access$000(DefaultNode.java:90) at org.ros.internal.node.DefaultNode$1.run(DefaultNode.java:182) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) Caused by: java.lang.ClassNotFoundException: std_msgs.uint32 at java.net.URLClassLoader$1.run(Unknown Source) at java.net.URLClassLoader$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) at java.lang.ClassLoader.loadClass(Unknown Source) at org.ros.internal.message.definition.MessageDefinitionReflectionProvider.get(MessageDefinitionReflectionProvider.java:62) ... 20 more Error creating the node /matlab_global_node_87034.

I also tried to reinstall the program in different computers with different operating systems (34-bit 64-bit Win7, 64-bit Win8).

Do you have any suggestions? How can I solve this initialization problem?

Edit:

Thank you for your answer. I tried to create rosmessages before calling rosinit as:

rosmessage('std_msgs/String')

and no error occured.

ans =

ROS String message with properties:

MessageType: 'std_msgs/String'

Use showdetails to show the contents of the message

It is also valid for rosmessage('std_msgs/UInt32'). I see that I can create rosmessages without any error.

I also checked the "javaclasspath" and "rosjava_messages.jar" is listed as "C:\Program Files\MATLAB\MATLAB Production Server\R2015a\java\jarext\rosjava\rosjava_messages.jar". I also checked this file in my computer and verified that it really exists there.

Do ...