Problem upgrading to 0.6.1

I have problem upgrading to 0.6.1 from 0.5.5.
The result after the upgrade is the following attached screenshot.
Can anyone give me some help on how to solve it?

try to reupload all files, it looks like some were not uploaded

I have tried it several times but with no luck.
I tried to make a new installation with the same database, again no lunk.
When I tried to make a new installation but with a new database, it worked but with none of my old data.
Any further suggestion?

Try disabling eaccelerator.

I did but with no luck too.
Finallly, I made a fresh install with a new database and I tranfered all the necessary records from the old database to the new and now it works.
Even though I don’t like to solve such problems in such a way, I couldn’t find anything else.
If someone else has anything else to suggest, I think it would be helfpful.