Admin online Products Description never keeping the text I have previously written

Hi,

I have problem with the Admin Categories/products form filed " Products Description ", never keep the text I have previously written, after I have clicked "Preview" and then "Insert".

After I go back again and let say like to re write something about the product, everything is blank.

Despite this I can see what I previously wrote in my online Catalog/webshop.

Here goes the workflow.

Go to Admin Log IN page

Go to Catalog>Categories/Products

Select a Product and open that product page in Admin login in.
Write anything you like, name, price, Product description ect.

Question
A)
I have a bilingual site, Swedish and English - can that be part of the problem, and if so, how and why?

B)
I use CUSTOM folders

I have gotten absolutly great help and support from Swedish guys using Zencart in a online forum in sweden, but we still havent nailed it down to what is causing this strange behavior., of making the text form fileds (such as the product description and so forth) to go blank/empty after clicking Preview/Insert, and later go back to write something new.

Any ideas?
Thanks in advance
Stefan

This, maybe:

http://www.zen-cart.com/forum/showthread.php?p=953964#post953964

GAZILLION thanks!!!
That really was the answer.

My webhost have mpved/added PHP 5, but they specifically liked their clients to tell to be moved to PHP5, in case they did not like to move to PHP 5 automatically.

So now I am all PHP5 and it works.

THANKS!