Problems after MT 3.2 to 4.261 upgarde

I tried setting
StaticFilePath /home/myaccounthere/public_html/mt-static

and did a refresh on this page:
http://www.futurepundit.com/mt/mt.cgi

and I still see the error at the bottom of no mt-static directory.

What is mt-static for anyway?

Another clue on mt-static: When I go to edit an entry on one of my blogs I see this use of mt-static in the HTML that MT generates:

So it thinks that the mt-static that matters is below the mt directory. Yet I set the path to:
StaticFilePath /home/myaccounthere/public_html/mt-static

So is it ignoring StaticFilePath? Or do I have to set StaticWebPath too?

Mind you, I do not mind if I have to use:
/home/myaccounthere/public_html/mt/mt-static
instead of:
/home/myaccounthere/public_html/mt-static

I just want something that works. Is there some reason to prefer one of those locations over the other?

I also still have my problem with comments not working. I would appreciate even guesses as to what to do about it.

I have another clue on the failure to show comments. When I go to edit the Comment Preview Template I get this:

One or more errors were found in this template.

* at line 47 is unrecognized.
* at line 48 is unrecognized.
* at line 48 is unrecognized.

I think these are for the SCode plugin that is still installed. How do I migrate to the MT way to show CAPTCHA?

Answer:

http://www.movabletype.org/documentation/designer/mt4s-comment-templates-for-use.html

This is what you use to replace the SCode MTSecurityCode and MTSecurityImage:

<MTIfNonEmpty tag="MTCaptchaFields">

<MTIfCommentsAccepted>

<MTIfRegistrationAllowed>

<MTElse><$MTCaptchaFields$>

</MTIfRegistrationAllowed>

</MTIfCommentsAccepted>

<div id="comments-open-captcha">

</div>

</MTIfNonEmpty>