Knime analytical platform 4.1.3a crashes during the loading of workflow

Hi, I have just updated the knime analytic platform to 4.1.3a. I have a fairly heavy proteomics workflow which, loaded fine in an earlier version. However with 4.1.3, this workflow starts to load but the platform crashes during the process. Other workflows load fine. I have reloaded the workflow that causes the crash just in case it had become corrupted somehow, but with the same result.

Could this be problems with memory? I only have 8 Gb on my laptop.

Thanks for any feedback

Phil