I've installed latest version of NPM in my lab environment (Orion Platform 2019.2 HF2, NPM 12.5) and I found that there is no "Browse SolarWinds MIB Database" option in creating device poller by Device Studio. I do not see any MIB tree to browse and when I try to type OID and search the answer is always "No results in "OID" in all fields" (even when I left only digit "1" in search field). It was working fine on Orion Platform 2019.2, NPM 12.5. So my guess is that HF2 interfere somehow. Is there any bug or Device Studio logic has been changed?