Visual Studio 2010/WinForm/Snap-To Lines/Control Visibility -

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every often, lose pink , blue snap-to lines when editing winform in vs2010. have tried rebooting workstation, closing unnecessary open applications, checking , unchecking various options in environment>general>visual experience, still happens. makes editing winforms difficult when can't see control dragging around , dragging to. checked googles , didn't locate definitive answer. else have solution this?

i had workstation reimaged , reinstalled vs2010 + sp1, things seem working again. have not seen problem couple days.


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