我也是这个问题,入库成功率百分之50,后来参考了一段文字,自己手动改一改就解决了
How to add libraries to this version of Kontakt:
You have to open the Kontakt 5.6.0 standalone app (or 5.6.5) and add the library in it. If the library doesn't appear on the left panel, don't worry about it. Just close the app.
Open this new Kontakt 6 version, and if you can't see that library there, then you have to do the following steps (in case there is a .nicnt file in the library's folder) but first close Kontakt, then:
1. check the SNPID number of the library, go to the folder of the library and open the .nicnt file (with TextEdit or any similar program), you will find a line like this:
P74
(in this case P74 was the ID code of Metropolis Ark 3)
2. go to your hard drive > Library > Application Support > Native Instruments > Service Center, and look for the .xml file with the name of that desired library, open it with TextEdit and you will see that the SNPID number there is 000 which indicates that Kontakt somehow hasn't been able to add it properly. Change that three zeros with the ID code you found in the .nicnt of that library, then save and close TextEdit. And you're ready to use the library in the new Kontakt.
During this process Kontakt app should not be opened!
You can get 5.6.0 standalone app from previous releases (for example 5.7.3 from here).
If you encounter the problem where Kontakt prompts you after you try to load the instrument that "This instrument belongs to a library that is currently not installed", in this case delete the library's .xml file from:
your_hard_drive > Library > Application Support > Native Instruments > Service Center
And also delete the com.native-instruments.{library's name}.plist file from:
your_hard_drive > Library > Preferences
Then try to add the library again in Kontakt 5.6.0 and follow the SNPID workaround from above again.
If you can't open Kontakt 5.6.0 app, use Permissions Reset app to reset it.
意思就是:把说明里提到的这个文件(ninct)用文本编辑打开查看SNPID号码,然后再去:资源库 ▸ Application Support ▸ Native Instruments ▸ Service Center 里面找到音源的想xml文件,用文本工具打开会发现SNPID号码是000,之后只要修改成跟ninct一致的号码就好了,604里面成功显示,打开也不报错了。