I also had the same issue with the java error as before, on the new release, but only when trying to configure something like a port, if you dont configure anything it works.
I removed YAAC and (downgraded?) Back to the 2018 version. Which I havent had any issues with other then maps dont display but I mostly run headless and only use for messaging.
Rather then fill up everyones mail box I will do some more testing and report back.
The area I live has more aprs coverage then cell service so It is nice to have this working.
Sent: Monday, December 21, 2020 8:47:06 AM
Subject: Re: [yaac-users] YAAC on a Pi0
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The application starts then closes with that error. It just started for me when I tried to add a serial tnc port in expert config so now it doesn¡¯t start at all with the most current release. Oh well.?