Hi-
I am experiencing the same error with my HAL 6.0 using the default brain. My box is a 2.4 ghz, 1 gb ram running XP Pro with registered HAL. The brain editor seems to function properly but when I click on the advanced button I get the error message of "HalScript Error 438 on line 1889 in column 4: Object doesn't support this property or method 'HalBrain'" The line numbers seem to increase as I use the brain more.
This occurs with and without the plugs enabled.
Hopefully this info will shed some light on the problem.
Charles