(my system is Xubuntu 14.04 . I did the same installation as on Unity 14.04 on which the problem didn't occur. But i can't change back the OS due to memory issues.)
I got a problem using the 'Play Framework' via Activator.
I get the error message above when running any 'activator' command, like 'activator ui' or 'activator eclipsify'. However 'activator -help' is working without problems.
I already changed all the permissions so that 'user' (which is me) has 'Read & Write' access. I also tried to reinstall it by deleting '.activator' and '.sbt' but it didn't help anything.
Is there anything else I can try out, or a way to contact someone from the 'Play Framework'?