int PostError (string message )

Return Value: 0

Arguments:

This function should only be used in scripts, to communicate with the user. You can use this to let the user know that something in the script has gone wrong (i.e. an expected value was not correct, divide by 0, object not found etc.). 

PostError should be used when the problem is significant enough to cause the script to abort (i.e. the script cannot go on executing). If the script can finish executing then you should probably just post a warning using PostWarning.

Note: All messages, warnings and errors are posted to messiah's message window (to the right of the command prompt). A message history is maintained in File->Messages.