Not sure why but sometimes I can post and other times I try to post and run to an error dialog and the information is lost...
We've contacted the hosting service company for this issue and they said that source codes can sometimes be mistakenly identified as an attack.
However, these are unharmful, they have changed different method to filter harmful codes.
Thank you for reporting and please let us know if you are still struggling with creating a new thread.
Thank you for reporting the issue.
I'll let the web administrator know this issue.