Few 2.2.1 errors

Hello!
I was using WordPress 2.1.3 on my blog (www.tomksoft.iblogger.org) for quite long time and everything was working great.
Yesterday, I bought prof. hosting and domain (at ByetHost) and I uploaded new WordPress 2.2.1.
Next, I’ve uploaded all the plugins and themes.

My next step was configuration – and first problems occurred. Custom permalinks didn’t work and on Permalinks page in Options I’ve got error: “Warning: in_array() [function.in-array]: Wrong datatype for second argument in /home/tomksoft/public_html/techblog/wp-admin/admin-functions.php on line 1298” two times.
I’ve resolved this problem by copying .htaccess file from my old blog, but that warning is still visible.

So, I thought that I’ve dealt with all problems, so I’ve exported posts from old blog (as it’s written in FAQ) and I’ve imported the file in new. While importing I had the warning, I’ve mentioned before few times on the importing page.
However, WordPress said that everthing went OK.
And there’s a problem again – there are no titles in all posts and pages.

I hope, that You can help me.

Kind wishes,
Tomasz Klekot