I try to give you more information.

 

We use the chat with from a classic asp forum.

User from this forum have to sign in there.
Then, they have a link to the chat.

With this link, i also sumbmit some data via querysting.
The target is a aspx site, where i compare the data in de querystring with the data in the database.
Are the data ok, then the user will be authorized und i make a rederict to the chat.

 

I can't tell you, how often the chat bring this error.

 

I think the erorr serves in the page CH_MainForm.js.aspx

... var OxO3e50 ... [[MsgNotSent]]...

on what terms will the MsgNotSent be desplayed ??
Someone or someting try to send the value null.

So, i hope, you understood me.

Thank you for your help