"Toolbar 'Custom' does not exist!"
To work around the problem, create the preset while applying the HTMLEditor instance to the page instead of through the preset manager.
Go to Insert -> WebAssist -> HTMLEditor
Click the customize button next to preset and modify the toolbar buttons. When you click OK you will be prompted to save a preset.
this doesnt work for us that have super suit cause we are stuck unless we pay again... for html editor so we stick to the last irite version that we can download, and no custom toolbar works any way to solve this????