Hi David Petronzio,
You can find some info about removed CurrentSpanStyle property and newly introduced API in this thread: RadRichTextBox.CurrentSpanStyle property not in Q2 release
In Q2 2010 format providers are moved to separate assemblies, as you can read here: Problem with Q2
And last, the issue with pages going white - it is fixed in Q2 2010.
All the best,
the Telerik team
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