Max Rydahl Andersen [https://community.jboss.org/people/maxandersen] created the discussion "Re: Caused by: java.lang.ClassNotFoundException: org.jboss.tools.runtime.ui.IDownloadRuntimes" To view the discussion, visit: https://community.jboss.org/message/777442#777442 -------------------------------------------------------------- Sounds good - so can you confirm you used the nightly update site previously over the summer ? if yes that could happen since the M1's were on there for a little while by mistake (its an nightly after all ;) /max -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/777442#777442] Start a new discussion in JBoss Tools at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]