Thanks for the post and your trial of WebUI Test Studio. For Silverlight child/popup windows, you would need to add the PopupTracker
to your implementation as described in this blog
in order to record and automate over the window.
For the Wait For error, did the test step run correctly as recorded by WebUI before you converted the test step to code? Also, is your TextBlock a customized version of the generic Silverlight kit TextBlock?
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