The QSAR protocols (and Calculate Principal Components and Compare Libraries by Bayesian Method as well) create new components that can not be removed by Discovery Studio 2.0 client. The attached protocols will add this capability.

How to use:
(1) Discovery Studio 2.0 is required.
(2) Download the two attached protocols. Remember where you saved them.
(3) Open Discovery Studio client.
(4) In the protocol explorer panel, right click the QSAR folder and select "Import...". Find file "Delete User Models.xml" you saved in step 2 above, and import it.
(5) Same as step 4, but import "User Model List.xml" into User's Protocols folder.