Hello, what is it, only appears in my older Logic Version

THE PLUGIN NAMED "VIENNA ENSE of TYPE -0 -50 isn't available on your system

Choose another plugin quit Logic or install the plugin in your MBP in order to use it in the project.

To be sincere I am having a lot of problems. It does not say it when opening the project with the latest Logic, but with a bit older version yes. But the lastest version crashes sometimes...