Error 500 when attempting to enter product page from back end

[propush]

Hello every one.

Today I was working on my shop. It has a single product, and it was just fine when I started to day. I just entered the product page, and chose my product - there was a typo in the description I needed to fix.

I saved my change, and ever sines, if I try to access the products page in the back end I get this:

500 - An error has occurred.

DateTime::__construct() [datetime.--construct]: Failed to parse time string (-Never-) at position 0 (-): Unexpected character


I tried logging out, messing a bit with time zones and Googling an answer, to no avail :[

system info:
Joomla! 2.5.6
VM - 2.0.6
PHP - 5.2.17

Please, if any other info is needed please ask for it and I'll deliver!

Thanks a lot for any and all help!

p.s. I have edited my views. Will updating to the new VM erase my changes? I also have 2 plugins I got from the VM shop  - and I'm afraid they will not work well with a new VM version - do I have a reason to be worried? This is why I haven't tried updating as first course of action.

[propush]

bump.

sorry for lame bumping, but it is a live site and I could really use some help.

Thanks alot!

[jenkinhill]

Go to your last working backup. This is probably a server php/timeset issue. I see you are using PHP 5.2.17 - minimum for J2.5 is 5.2.4 and preferably 5.3+ - http://www.joomla.org/technical-requirements.html