If you have locally modified versions of that template, you will need
to update it to contain the following in the HTML <head>:
- <TMPL_UNLESS ISPAGE>
+ <TMPL_IF DYNAMIC>
<TMPL_IF FORCEBASEURL><base href="<TMPL_VAR FORCEBASEURL>" /><TMPL_ELSE>
<TMPL_IF BASEURL><base href="<TMPL_VAR BASEURL>" /></TMPL_IF>
</TMPL_IF>