This seams to be an old issue, I hoped to be repaired with RC4.

I just freshly installed Kickstart totaly from scratch and the ntried to edit a content type.

Emediately then I receive an PDO-Exception - General Error ...

The same happens, when I try to create a new product type.

Can someone give me a hint how to fix this?

The PHP-Settings are very wide set (memory 256 MB, processing time 2400 seconds)