Error:Could not find or load main class com.lavastorm.brain.execution.java.node.NodeWrapper

NodeWrapper errors indicate that there is an issue with the jar files not being picked up and the LAL version is not matching.

The error means you're using one version of BRE or an LAE server and pointing to a lal1.brg or core.brg of another version and we just need to get them in sync.

Also, the LAE Server and BRE must be on the same version of LAL.

To find out what version of LAL and BRE you're running:

Go into <InstallDirectory>/docs/lal/LAL Release Notes.pdf and the LAL version should be written on the front page. 

In BRE, if you go into View > Dependent Libraries, you will see the version in use for the currently loaded libraries, and they must match.

Also, you can check your Search Paths (Tools -> Preferences > Search Paths) in BRE and ensure that you are picking up the correct libraries and not that of a different installation? 

In your search paths, you should keep the main brg and point to it. 
If there are any others not in use, we suggest that you delete them and just add what you need (custom libraries etc).