Found a Bug/Error while trying to access Scheduler

Hi,

Im currently evaluating the use of JIRA Portfolio to use it for the planning of our sprints.

I was assigning new Epics and stories with some teams. When I clicked on recalculate and went to the scheduled it showed "unexpected exception". Not sure how to "fix" it. so Im writting to you to see if it can be fixeds. Below the description of the error. Thanks!

error in variable slot function
Exception timestamp: 1431977654706

java.lang.RuntimeException :error in variable slot function

at com.radiantminds.roadmap.common.scheduling.trafo.teams.common.sprints.VariableScrumWorkSlots.findInIrregulars:69
at com.radiantminds.roadmap.common.scheduling.trafo.teams.common.sprints.VariableScrumWorkSlots.getSlotOrNextForTimeStep:50
at com.radiantminds.roadmap.scheduling.data.resources.ResourceGroup.getSlotOrNextForTimeStep:123
at com.radiantminds.roadmap.common.scheduling.retrafo.stats.ScheduleStatisticsProvider.getPartialSlotData:79
at com.radiantminds.roadmap.common.scheduling.retrafo.stats.ScheduleStatisticsProvider.calculateScheduleStatistics:63
at com.radiantminds.roadmap.common.scheduling.retrafo.solution.RoadmapToPlanSolutionTransformer.transform:49
at com.radiantminds.roadmap.common.scheduling.LocalCalculationProcess.execute:109
at com.radiantminds.roadmap.common.scheduling.Calculation$2.run:135
at java.util.concurrent.Executors$RunnableAdapter.call:511
at java.util.concurrent.FutureTask.run:266
at java.util.concurrent.ThreadPoolExecutor.runWorker:1142
at java.util.concurrent.ThreadPoolExecutor$Worker.run:617
at java.lang.Thread.run:745