Welcome to the IDM Forum. This forum is meant as a user-to-user support mechanism where users can share knowledge and tips for all IDM software.
Since these forums are user-to-user based, IDM does not regularly read or reply to the posts in this forum. For problem reports, suggestions, or feature requests, you must email us directly. Our trained technical support staff answers most inquiries within 30 minutes.
The referenced syntax highlighting file is full of errors including big syntax mistakes. I have attached the smarty wordfile with all mistakes and errors fixed.
Attention: If you add this wordfile to standard wordfile.uew, you have to replace existing language definition for HTML because only 1 language in the wordfile can have the required keyword HTML_LANG. If there are 2 language definitions with keyword HTML_LANG, the multi-language highlighting for all type of HTML files will not work anymore - see in help of UltraEdit the page about Syntax Highlighting.