1. install 8u40 b04
2. create self-contained bundles (I created new sample using netbeans)
3. run .app by double clicking from Finder - it exits silently
run app from command line and it exits with NoClassDefFoundError (attaching full trace of exception)

Also, tested the same scenario with 8u40 b01 and it works fine (app started and it shows new frame).

This exception isn't not reproducible with latest b06 but seems like it's just not visible due to crash described in RT-38692