Confirmed. Exact stack trace is:

    java.lang.Exception: java.lang.Exception: org.openmicroscopy.shoola.env.data.ProcessException: Cannot run script with ID:56901
	at org.openmicroscopy.shoola.env.data.views.ProcessBatchCall.doStep(ProcessBatchCall.java:101)
	at org.openmicroscopy.shoola.util.concur.tasks.CompositeTask.doStep(CompositeTask.java:226)
	at org.openmicroscopy.shoola.env.data.views.CompositeBatchCall.doStep(CompositeBatchCall.java:126)
	at org.openmicroscopy.shoola.util.concur.tasks.ExecCommand.exec(ExecCommand.java:165)
	at org.openmicroscopy.shoola.util.concur.tasks.ExecCommand.run(ExecCommand.java:276)
	at org.openmicroscopy.shoola.util.concur.tasks.AsyncProcessor$Runner.run(AsyncProcessor.java:91)
	at java.lang.Thread.run(Thread.java:744)
    Caused by: org.openmicroscopy.shoola.env.data.ProcessException: Cannot run script with ID:56901
	at org.openmicroscopy.shoola.env.data.OMEROGateway.runScript(OMEROGateway.java:577)
	at org.openmicroscopy.shoola.env.data.OMEROGateway.createMovie(OMEROGateway.java:5933)
	at org.openmicroscopy.shoola.env.data.OmeroImageServiceImpl.createMovie(OmeroImageServiceImpl.java:1395)
	at org.openmicroscopy.shoola.env.data.views.calls.MovieCreator$1.initialize(MovieCreator.java:83)
	at org.openmicroscopy.shoola.env.data.views.ProcessBatchCall.doStep(ProcessBatchCall.java:99)
	... 6 more
    Caused by: omero.ValidationException
    serverStackTrace = ""
    serverExceptionClass = ""
    message = "Invalid parameters:
               WRONG TYPE for "Channels": <class 'omero.rtypes.RIntI'> != <class 'omero.rtypes.RStringI'>
               "
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at java.lang.Class.newInstance(Class.java:374)
	at IceInternal.BasicStream$DynamicUserExceptionFactory.createAndThrow(BasicStream.java:2243)
	at IceInternal.BasicStream.throwException(BasicStream.java:1632)
	at IceInternal.Outgoing.throwUserException(Outgoing.java:442)
	at omero.api._IScriptDelM.runScript(_IScriptDelM.java:508)
	at omero.api.IScriptPrxHelper.runScript(IScriptPrxHelper.java:662)
	at omero.api.IScriptPrxHelper.runScript(IScriptPrxHelper.java:634)
	at org.openmicroscopy.shoola.env.data.OMEROGateway.runScript(OMEROGateway.java:573)
	... 10 more