Hello, I got this sort of digital signature error when I tried to run cgoban.jnlp. I've had the file on my computer for a long time and used it to access KGS. I redownloaded the same file from http://www.gokgs.com/download.jsp , but the error persists. Anyone know what's up? Should I just ignore the warning and run it anyway?

I recently update Adobe. I'm not sure if that's related to the problem.

It shouldn't have anything to do with adobe. There's either something wrong in the downloaded file, or in KGS' certificate files.

Preview edit: just tried myself, and I get the same message. Looking at things in detail, seems that KGS' certificate has expired. Likely not a big deal, as everything else seems in order, but wms or a server admin should be contacted, as they should renew the certificate to guarantee you're not getting a fake file, instead of having to judge.

I was just going to bed, but a link to this thread in an email will likely have the notice not show up soon.

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Do others still get the warning, too? I tried downloading the .jnlp again but it is the same : /

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There is the alternative of offline installation:

http://senseis.xmp.net/?CGoban3OfflineInstallation

Since it works without JNLP file, you cannot get a related security warning.