WebStorm Live Templates variables - groovyScript("groovy code") not working?

I'm trying to do some stuff with Live Templates, and thought I'll use Groovy to get the file path (see here):

groovyScript("_editor.getVirtualFile().getPath()")

When using that Live Template inside a file, nothing happens. Not even if I define that variable to be: 

groovyScript("return \"test\"")

I took a look in the idea.log file, and found this error:

java.lang.NoClassDefFoundError: groovy/lang/GroovyShell

at com.intellij.codeInsight.template.macro.GroovyScriptMacro.a(GroovyScriptMacro.java:61)

at com.intellij.codeInsight.template.macro.GroovyScriptMacro.calculateResult(GroovyScriptMacro.java:51)

[………………….]

at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)

at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)

2017-12-19 15:26:35,810 [6004506]  ERROR - Insight.lookup.impl.LookupImpl - WebStorm 2017.3.1  Build #WS-173.3942.31

2017-12-19 15:26:35,810 [6004506]  ERROR - Insight.lookup.impl.LookupImpl - JDK: 1.8.0_152-release

2017-12-19 15:26:35,810 [6004506]  ERROR - Insight.lookup.impl.LookupImpl - VM: OpenJDK 64-Bit Server VM

2017-12-19 15:26:35,810 [6004506]  ERROR - Insight.lookup.impl.LookupImpl - Vendor: JetBrains s.r.o

2017-12-19 15:26:35,810 [6004506]  ERROR - Insight.lookup.impl.LookupImpl - OS: Mac OS X

2017-12-19 15:26:35,811 [6004507]  ERROR - Insight.lookup.impl.LookupImpl - Last Action: EditorChooseLookupItemReplace

2017-12-19 15:26:35,811 [6004507]  ERROR - Insight.lookup.impl.LookupImpl - Current Command: Choose Lookup Item Replace

2017-12-19 15:26:36,516 [6005212]   INFO - ter.rhino.RhinoFunctionManager - [ApplicationImpl pooled thread 91] JSHINT 2.9.5 function extraction took 58.55 ms

Any way to get this working?

Thanks,

Alex