I downloaded the free version of Talend Data Prep as a MacOS DMG file from this website. I then dragged the application into my applications folder. When I start Talend Data Prep, the website opens in my default browser.
There I can see the available datasets and the preparations. But when I click onto one of the datasets, or on one of the preparations or when I want to create a new preparation, I get various errors as red ballon tips on the upper right. Unfortunately the errors don't indicate what went wrong exactly.
In the current state I can not use Talend Data Prep.
AppNap seem to be disabled on you Mac, so your issue is not here.
The commands I've gave to you in my last reply are here to increase the hystrix timeout. We're treating the symptoms, but this could help you to use TDP while we investigate on the root cause.
For you second question, you can just right click / Quit the app in the dock.
I did executed the commands and DataPrep works fine now. I tested uploading, renaming and deleting datasets as well as creating, editing and modifying preparations.
