App doesn't work after exporting as JAR

[HeroErix]

I have made an application in eclipse to send certain messages based on user input. The application works fully when run in Eclipse. When I try to export the app as a runnable JAR file, I can still use the interface i made, but trying to send the frame does not work.

I have tried all three options under "Library handling". Is there another way to run the program without an IDE, or is there an extra step I need to export correctly?

EDIT: I tried running the JAR through the console and recieved this error "java.lang.UnsatisfiedLinkError: no rxtxSerial in java.library.path thrown while loading gnu.io.RXTXCommDriver". I fixed this by finding rxtxSerial.dll and moving it to the working directory. But I now receive a new error shown below.

The mentioned log is here:
hs_err_pid13880.log

EDIT2: I would like to add that this same issue is true for the example application. I have tried the same steps for MainApp.java as the program that I wrote and they both face the same issue.