Apart from my csound vst instruments I have no other vst plugins on
this machine. I'm assuming that one can normally use as many instances
of the same plugin as they like without any problems. I would have
thought that the constructor for each plugin would be called on every
instantiation but it doesn't appear that way for me. It looks like
Csound is only compiling once, hence only one instance of it is
running even when I have two Csound plugins on screen. I need to look
more closely at this. As for the resizing issue, my plugins open in a
small window but if I resize they are fine and I can see all the
controls fully in my plugins window. If I close the window and reopen
it returns to the last size so the controls can still be seen. I would
really like to sort out the multiple instances issue. I don't think
it's something to do with the unique ID as every plugin has a unique
ID, and usually several of them can be launched simultaneously without
problems.

Rory.