Updated to TCAL build 173. (Note: I did NOT update the players.)
The three TCAL SWCS used by Flex 4 are now named tcal_core.swc, tcal_conversion.swc, and tcal_edit.swc.
All TCAL APIs are now in a package named flashx.tcal. We are using flashx to indicate important APIs that are considered to extend the Flash platform but which live below application frameworks such as Flex.
On TextFlow, a new 'displayController' property replaces the old 'container' and 'controller' properties.
When importing, you use importToFlow() rather than importFromString() or importFromXML.