WYSIWYG Web Builder uses hardware acceleration (Direct2d), for better performance and higher quality graphics during design time.
If you are using an older version of Windows 7 and you are experiencing unexpected behavior like issues with rendering or lock ups in the workspace then this is most likely related to out-of-date system files.
To fix this, please install the Platform update for Windows 7 SP1:
https://support.microsoft.com/en-us/hel ... 008-r2-sp1
See also, the upgrade FAQ:
http://www.wysiwygwebbuilder.com/forum/ ... 10&t=85284
Frequently Asked Questions about WYSIWYG Web Builder
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