I'm following the tutorial on UDB Datapaths in the document AN82156 (rev G), "Designing PSoC Creator Components with UDB Datapaths." At page 17, after Generate Symbol, step 19, Doc.CatalogPlacement = AN82156/Digital/Cntr8. The component never appears in the Component Catalog, neither here nor when any other project is opened.
Welcome to the confusing world of PsoC component library design. I am sending you the component author guide. I hope it can be of help. There is also some PSoC training videos. I am also sending you the programs with the libraries already in them. I must have spent about a week trying to get a library to work. It just takes practice.
It is a bit confusing at first but with study and trail-and-error, it becomes more evident. It's a pretty sophisticated and elegant creation process. Kudos to the team of Cypress engineers in creating a very useful set of tools.
Caution: Once you're successful, don't wait too long to create your next component. If I take too long between components, I have to relearn steps in the process! Oh well!