I reproduced the problems described in KNIME SDK Setup for 3.6. Since that topic is closed I am opening this one.
In the last days I noticed many warnings in the Eclipse console when launching KNIME from the SDK. First I thought it was my nodes but when I disabled the nodes in the workspace and only loaded the plugins from the KNIME target file I experienced the same issues. This was on 3.4 with this target file https://github.com/SiLeBAT/FSK-Lab/blob/master/de.bund.bfr.knime.fsklab.target/KNIME_3_4.target.
I also tried with 3.6 and the https://github.com/knime/knime-sdk-setup in a clean workspace with only the three projects from the SDK setup. From the 2018 releases branch I used the minimal target https://github.com/knime/knime-sdk-setup/blob/releases/2018-07/org.knime.sdk.setup/KNIME-AP.target. This is the 3.6 release, not the nightly one. Unfortunately I am still getting the same warnings and suffering the slow boot.
In case it helps these are the logs:
Thanks in advance,