Again, just to make sure:
It's likely all custom images, including language ones, were lost during the process.
Don't worry, I'll especially take care of it.
So, all custom images: favicons, language images, forum theme images and mostly a part of custom material was lost due to forum reinstall (see 1st post), in other words, we (Isaac) installed the forum again from scratch with the database we had. The attachments mostly is safe, although we had thought otherwise.
Last, I'll reupload all custom content whenever I have the proper settings to do so. But, think, we didn't lose anything important.

EDIT:
And I received some spams.
And those who received too: This forum is set up so that user profiles (including e-mail addresses) are hidden from visitors; this means spambots and malicious "visitors" can't capture your personal data so easily. But there are two simple means so that they can still get your e-mail address:
1) signing up for account, since only forum members can open user profiles;
2) a forum member carelessly posts his e-mail on public, since spambots can "read" the public posts.
Then, if you want, I would recommend you to:
- don't post your e-mail address as well as any personal data on public;
- hide your e-mail address from public by setting "Hide my e-mail" on your user profile (besides, if someone wants it, they'll ask you, and we admins can access it safely).
That's all.