Problems in sonar with all NI instruments!!

First and sorry for my english.

I have Sonar 1.3 and Sonar 2.0 XL.
All works fine

I insert any NI instruments (demo or original),assing midi track to it.
All sounds great!

But many notes midi do not get to sound, and other notes midi
do not stop of sounding ,That happens in all the NI instruments.

I test vst version with a vst-wraper (directixer & fxpansion)
and the same it occurs!

Whats wrong.?

P-3 933 mhz
256 mb ram
Winows XP
2 HD
1 CD
Sonar 1.3 / Sonar 2.0 XL
Kontact 1.02, Prophet (the last update) , FM7 (demo)

 

I dont use Sonar so i can´t help you. Have you tried contacting NI support?
As they are about to make a tour with Sonar i doubt there are any troubles with them getting along, so hopefully you have made something wrong or made wrong settings so to speak.

 

I use SONAR, and I have found that NI products don't yet work very well with SONAR, because they were mostly made for SONAR's old DXi1 format. The only instrument I've tried that works like it's supposed to is Absynth.

Pro-52 and FM7 both had bad/stuck notes (FM7 would even crash SONAR!). Battery just doesn't work in SONAR. I found them to be useless in SONAR, that's why I haven't bought them. AT least Kontakt works - just not as well as the VST version.

 

I've had no problems with either B4 or Kontakt in SONAR2XL using both the FXpansion DX-VST adapter and the actual DXi versions, with the exception of the already-known issue concerning launching Kontakt using SONAR's Synth Rack. Both have been working fine for me, with none of the glitches you mentioned.

One thing to keep in mind when using the FXpansion adapter is to make sure to use the "Use Fixed Sized Buffers" option with all NI products. To quote the doco that comes with the adapter:

 

That's funny; I couldn't even get Kontakt to show up as a VST-DXi when I tried it - it didn't seem to change.

It's true; B4 works very well with SONAR; the only problem I encountered is that looping playback sometimes hard-crashes SONAR.
I'll try the Fixed Buffer thing, see if it helps the other plug-ins. I'm sure NI's DXi problems will go away as they get more familiar with the DXi implementation. It's probably too new to expect perfect performance all the time, and it seems like Reason was the real motivation for the improvements of DXi2, and everyone else has to catch up.

Thanks for the advice.