log message not understood

Hello,

Trying to run a model of steady flow/steady heat transport, I get a log message saying:

Math: Argument domain error in function sqrt!

after about 500 iterations. I then have to close Feflow by closing exceed, because Feflow does not react any more.

What does the log message mean and where can I find the meanings of log messages in general?

Thanks for your help,

Holger

The log message indicates an overflow of a variable during a square root computation. The reason is hard to detect from only this error message. There's no overview currently available for all log messages.