a development problem in a RCP application with Scala IDE 4.7 and Eclipse Oxygen

[g.e....@ieee.org]

Hello.

I'm developing a RCP application with Scala IDE 4.7 and Eclipse Oxygen which uses Spark and Cassandra.

By the way, when I execute a program which connect Spark with Cassandra in an eclipse workspace, it works fine.

However, when I execute the program in an eclipse application (in eclipse project, right click -> run as eclipse application), it doesn't work in the new launching window.

I set org.scala-lang.scala-library in MANIFEST.MF to org.scala-lang.scala-library;bundle-version="[2.11.8,2.12.3)".

However, it still doesn't work.

How can I solve this problem?

Are there someone to guide this?

Thank you so much.

Grace