QUOTE(minidiapolis @ Jan 31 2008, 08:40 AM)

Can someone explain these errors. . . I'm not understanding
Where did you get those error messages?
QUOTE(minidiapolis @ Jan 31 2008, 08:40 AM)

</head>✉
Most likely, you nested tags and closed them in the wrong order. For example <p><em>...</p> is not acceptable, as <em> must be closed before <p>. Acceptable nesting is: <p><em>...</em></p>
Another possibility is that you used an element which requires a child element that you did not include. Hence the parent element is "not finished", not complete. For instance, in HTML the <head> element must contain a <title> child element, lists (ul, ol, dl) require list items (li, or dt, dd), and so on.
Our online validator says
CODE
Error: missing a required sub-element of HEAD
Sure enough, you don't have a
title element, which is required in the
head element.
QUOTE(minidiapolis @ Jan 31 2008, 08:40 AM)

Line 20, Column 11: "." is not a member of a group specified for any attribute.
"Hey. . . Wait. . . Where's that water coming from? It's not raining."
A couple lines earlier, you have mismatched quotes:
CODE
width = "100%'
QUOTE(minidiapolis @ Jan 31 2008, 08:40 AM)

Line 26, Column 30: an attribute specification must start with a name or name token.
<div style = margin-left : "20%"> ✉
An attribute name (and some attribute values) must start with one of a restricted set of characters. This error usually indicates that you have failed to add a closing quotation mark on a previous attribute value (so the attribute value looks like the start of a new attribute) or have used an attribute that is not defined (usually a typo in a common attribute name).
You need to quote the entire style attribute, like this:
CODE
<div style = "margin-left : 20%">
QUOTE(minidiapolis @ Jan 31 2008, 08:40 AM)

Line 33, Column 116: cannot generate system identifier for general entity "lat".
…VjA2ZwLWJ1dHRvbgRzbGsDbGluaw--#mvt=m&lat=40.830195&lon=-85.109384&mag=6&q1=57✉
An entity reference was found in the document, but there is no reference by that name defined. Often this is caused by misspelling the reference name, unencoded ampersands, or by leaving off the trailing semicolon (

. The most common cause of this error is unencoded ampersands in URLs as described by the WDG in "Ampersands in URLs".
Entity references start with an ampersand (&) and end with a semicolon (

. If you want to use a literal ampersand in your document you must encode it as "&" (even inside URLs!). Be careful to end entity references with a semicolon or your entity reference may get interpreted in connection with the following text. Also keep in mind that named entity references are case-sensitive; &Aelig; and æ are different characters.
If this error appears in some markup generated by PHP's session handling code, this article has explanations and solutions to your problem.
Note that in most documents, errors related to entity references will trigger up to 5 separate messages from the Validator. Usually these will all disappear when the original problem is
Sure enough,
Ampersands (&'s) in URLs explains the problem.