I made a backup of my older files before the upgrade, fortunatelly!
I had no idea about this Theme_Frameworks technology that uses child themes. Thanks for this information.
I read about this and i see that i can make my own child theme by myself and use it without worrying about losing my changes when the parent theme is updated, since the changes are in the child theme.
check this url: http://op111.net/53
If this works, then i have the solution to my problem!
I did all steps indicated in this page but when i reached on step7 that i had to activate my child theme i faced this problem:
In the administrator panel, the theme i created does not appear since there is a warning saying that for each theme there must be at least a stylesheet and a prototype file (translation from greek - i hope you know what i mean - i thought it meant the index.php file ???)
Everythink is ok with ste style.css file but what about the other one?
Note (that may be important):
I work topically in my pc so the child theme is just a folder (named "kid") in the URI /wp-contents/themes/ and which contains the style.css file.
Can you please tell me what i'm doing wrong?
Is there something else that i have to do so that the theme can be recognised in the administrator panel?
Thanks in advance for your help.