Hi,
I have been experiencing a memory leak when using the NBRGBCombination utility script.
I've opened task manager and watched PI's memory usage climb to max out my ram when using it. It doesn't cause a crash, but I have been vigilant in closing it when it slows my computer to a crawl, thereby releasing the memory back to normal levels and making the computer usable again.
It seems the tool makes PI use 2gb when first loaded then after applying or switch views (NBRGB -> RGB, etc.) the memory usage climbs rapidly until maxing out.
Win 8.1 64bit
8gb ram
PI up to date