Using multiple instances of the same VST...

I am trying to recreate a specific song with one sample based VST instrument. I have so far used 7 VST slots with the same VST but when I now click on the 8th slot and then click on the VST again to load, it does nothing. Other VSTs will load but it seems not sample based ones?! I can’t work out why. Any thoughts?!

memory issue maybe ?

Hi Paul, it could be. I’m running it on Cubase 5 32bit under Win 7 32bit. I have a total of 4GB RAM installed. It could be that I need to add more RAM I suppose then switch to 64bit. It’s just strange and it is also the first time I have come across this. :confused: