"Could not open in Design view. Quote values differently..." solved!
Historical article · Originally published August 28, 2003; technical details may be outdated.
Ever get this message when working in the Vs.Net webform designer?
“Could not open in Design view. Quote values differently inside a '<%...” etc
This problem is easily solved by replacing nesting double quotes with single quotes. That means if you have this:
<img src="../<%=Application("SERVICE_COMPANY_LOGO")%>">
just change it to this:
<img src='../<%=Application("SERVICE_COMPANY_LOGO")%>'>
that did the job for me.