Hi, I had the same problem, I went to my webhost (hostgator) and they fixed it straight away for me, so I up and running, although it seemed to have reset my plugins??? and now have an issue installing new plugins…but i happy that they help me in first place…good luck
Mario
Hi Again, for your reference, I again went to hosting account with plugin issue and they fixed it, it seems its with FTP files, too technical for me so hopefully your hosting account can help ypou
Bye, Mario
It seems like the update hasn’t been finished completely. Possibly the PHP script execution limit is too low? Try downloading WP 3.0 from the home page and replace all directories and files EXCEPT wp-content and wp-config.php with the files in the zip. Then it should all work.
Hey thanks for the reply guys. I’m gonna try what you all suggested.
Thanks again
I got it all fixed. I contacted my hosts support team and they fixed it for me.
Here’s what they said: “Dear Customer,
this is caused by the events_calander plugin. I renamed it in the wp-content/plugins folder to events_calender.old so you can log in and do what is needed. It may be that it’s not compatible with 3.0.”
If anybody else ends up having this problem just contact your hosts support tech team like mariozorovic said.
P.S Thanks a lot mariozorovic and you too ts230 for the help.
That was a known error (and is listed here: http://wordpress.org/support/topic/411649 )
You can fix it yourself 🙂