No sound in Fl studio when you leave one plugin and go to another

Have you problem with the sound in FL studio?

Well here was my problem. When i used one plugin like kontakt 5 and wanted to use Nexus. Then the sound just stopped working.

After a long time i found out the problem.

The problem is Auto close , see under sample rate 44100. If this is on then you plugin will close when you leave one plugin to go to the next one.

So turn it off like picture under.

You get problem if you have it like this: