error: cannot find symbol class GroovyObject

Hi,

  I am currently using 11.5 and in one of the installations (different computers) everything is fine, but in the other I get the following error:  "error: cannot find symbol class GroovyObject" when I compile.

  The Maven project has multiple Maven modules.  One of the modules has both Groovy and Java code, and the Java classes call the Groovy classes.

  I don't understand, why it works on one and not the other.

  Please let me know if I can proovide additional details.

OS:        Windows 7

IDEA:     11.5

Java:       1.7.0_51

Groovy:    2.0.5