Crashing with UAD-1 plugins

[Newman]

Hi,

I seem to have a problem with a UAD-1 crashing Reaper. It seems to work okay when there isn't much else plugin-wise, but as I add more, eventually if I add one too many UAD plugs, Reaper will go into "not responding".

I don't have this problem with Cubase, so I don't think it's the old card or my old computer.

Anyone else have this problem?

Thanks!

P.S. The UAD-1 is 32 bit and I'm using 64-bit Reaper, maybe that has something to do with it?