Name '_o' is not declared

[vinoth82]

Name '_o' is not declared this error occurs in masterpage. how to solve it

[falaque]

can you elaborate your question.

[vinoth82]

Reg:above issue

This error which will not affect the page. In master page while these type of
html anchor tag the below line will show blue color line. while mouse over it
the error msg displayed

<% SocResource.Get ResourceName = "SOC-MST25"%>
<a href="<%=SocRes ource.GetResour ceName%>" class="menulink ">Advertise </a>
<%Else%>
<% SocResource.Get ResourceName = "SOC-MST26"%>
<a href="<%=SocRes ource.GetResour ceName%>" class="menulink ">Advertise </a>
<%End if %>

[falaque]

this may help you. try out. as it suggests check all your inline code.

check each block one by one, i.e. while checking one block comment out other blocks.

[Frinavale]

This error which will not affect the page. In master page while these type of
html anchor tag the below line will show blue color line. while mouse over it
the error msg displayed

What is "SocResourc e"?
I don't think you're retrieving the resource properly.