Error in opening MATLAB pool

I use the local profile in the MATLAB parallel computing toolbox to run multiple Monte Carlo calculations at a time. Normally, this works without any problems. Just today I've started getting an error when executing the command 'matlabpool open'. When validating the local profile within the Cluster Profile Manager, the validation results show a failure for the stages 'Job test (create job)' and 'SPMD job test (createCommunicatingJob)'. Within the detailed description the feedback for each is:

Error using parallel.Job/submit (line 290) All dimension arguments must be greater than zero

Error in parallel.internal.validator.Validator>iCreateAndSubmitJob (line 497) job.submit;

Error in parallel.internal.validator.Validator/runJobStage (line 265) [commandWindowOutput, job] = evalc('iCreateAndSubmitJob(cluster, jobVariant);');

Error in parallel.internal.validator.Validator/runValidationStages (line 215) currStagePassed = obj.runJobStage(profileName, cluster, currStage);

Error in parallel.internal.validator.Validator/validate (line 111) hasPassed = obj.runValidationStages(profileName);

Error in parallel.internal.ui.ValidationManager/validate (line 45) obj.Validator.validate(profileName);

I haven't made any changes to the local profile, and everything was running smoothly yesterday. Does anyone have any ideas on what might have gone wrong in the last 24 hours.

Thanks, Austin