[Seaside] Possible Pharo1.0 problem. No error indication while parsing and no debugging triigered on error.

[Fritz Schenk]

Running with Seaside 3.0 on Pharo 1.0

Simple rendering method with error
<witherror>
renderContentOn: html
	html heading: count.
	html anchor
		callback: [ self increase];
		with: '++'  "<<<<< error here - missing period"
	html space.
	html anchor
		callback: [self decrease];
		with: '--'
</witherror>
The error is not indicated while 'accept'ing or prettyprinting. 

Missing '.' after first with clause.

when I access the page I get the error:

<error>
MessageNotUnderstood: ByteString>>html
</error>

the page continues in 'Loading...' state, but there is no debugger in the
environment.

Please help.