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Hi there, > whenever i try to open the AWIPS CAVE it gives me the logger in the > background with lots > of scrolling text (which i know is normal) but after that it says > "Error! > Error instantiating workbench: null" > then it loads the AlertVis bar and gives me this error > "Error > Error purging logs > Reason: > Error occured during purge and rotate" > what does this mean and what do i do We have seen this problem caused on Windows because of IPv6 connections (instead of IPv4). Please see our website on how to fix the issue: http://unidata.github.io/awips2/appendix/common-problems/#windows-cave-start-up-error Thanks. --Shay Carter She/Her/Hers AWIPS Software Engineer UCAR - Unidata If you're interested, please feel free to fill out a survey about the support you receive: https://docs.google.com/forms/d/e/1FAIpQLSeDIkdk8qUMgq8ZdM4jhP-ubJPUOr-mJMQgxInwoAWoV5QcOw/viewform Ticket Details =================== Ticket ID: GFL-893806 Department: Support AWIPS Priority: Normal Status: Open =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.