MySQL error 1153 while editing forum in ACP

[Stefan118]

I just called my webhost and indeed, the MySQL max_packet_size was 1MB
He thought it would be standard at 10, but it wasn't.
About 5 minutes later it was set to 20Mb, and the problems were solved.

So stupid, At the top in the ACP there is server information.
it says:
Server Type: Linux
Web Server: apache2handler
PHP: 5.3.8
and so on... the last line was: MySQL Packet Size: 1,00 MB

Now it is 20.

Thanks for the help.