Error in saving new activity

Hi out there,
i have a problem in saving new activities:

If i try to save an new assigned activity i get this message:



The new activity seems not to be saved. If i press 'save' once again, the same error appears.

If i refresh the activity-Window, each saving appears as single activity. This activities could be edited and saved then without problems or errors.

Is somebody out there who knows this Problem ?

Version: 4.2.3

Thanks

Hi,
thank you for the idea. I am using the application in php-safe-mode. Thats the reason of all the messages.

I will try to set the maximum-time in htaccess or so.

i will tell you if successful.

thanks