You also need to embed the fonts in the html editor's fla. You just need to copy the same embedded outlines from your website fla to the html editor fla.
Please read the section on the FlashText HTML Editor here.
http://flashblocks.com/FlashblocksML/ReadMe.php#HTMLeditorsAnd the section on embedding fonts below that.
http://flashblocks.com/FlashblocksML/ReadMe.php#fontsYou may find a video tutorial on embedding fonts into Flash and configuring Flashblocks to use the embedded fonts, here.
http://flashblocks.com/tutorials/videos.php?dir=FlashblocksML_Embedding_FontsRegarding the data file, the dataFile.xml file is there but mostly empty. If it is missing, Flashblocks will attempt to create it.