Possible bug in user tracking

[Liviu Lalescu]

I wanted to track myself (user number 1, admin) in my forum. I have many posts and many used IPs. I got the attached error (detailed in the second screenshot).

For other users who did not post that much it seems to work OK. For the other admin (we are two admins), who has again many posts, the same bug is met.

[Aleksi "Lex" Kilpinen]

I have a full page worth of IP addresses logged in my profile, and I just tracked myself here with no issues.
Could you check the backtrace for that error? What version are you on specifically? Any mods that deal with user info or IP addresses?

[Liviu Lalescu]

Could you check the backtrace for that error? What version are you on specifically? Any mods that deal with user info or IP addresses?

How should I do the backtrace and how to report it to you?

Latest SMF, 2.1.4, with ~18 languages from your official site, latest versions.

No mod installed.

[Aleksi "Lex" Kilpinen]

On the right side of the error, there's the link "Backtrace information". It might offer some further information.

[Liviu Lalescu]

I attach the backtrace screenshots.