Error when logging in from the char select

[23857628]

Sounds like a memory issue to me, as you say it doesn't happen all the time. You should try memtest86 and see if that gives any errors. If so, you'll have to replace the broken piece at some point. If you have more than one piece of memory, try to remove all except for one and see if the problem persists.

[thurmar]

Try taking a look at a similar thread, here.

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[adipocere]

Okies, thanks, I am currently trying those fixes. Wish me luck