Templates Overrides Not Working - Joomla! Forum - community, help and support

i made template overrides component creating following tree:

templatename/html/com_virtuemart/categories/tmpl/default.php
templatename/html/com_virtuemart/productdetails/default.php
templatename/html/com_virtuemart/productdetails/default_relatedcategories.php

etc.

after did upgrade on component (which file structure still same), thought customized template overrides 'kick in'. apparently didn't. reason why template overrides not work?

my templates .xml file/folder section follows:
<files>

<folder>css</folder>

<folder>html</folder>

<folder>images</folder>

<folder>javascript</folder>

<folder>fonts</folder>

<folder>language</folder>

<filename>index.html</filename>

<filename>index.php</filename>

<filename>templatedetails.xml</filename>

<filename>template_preview.png</filename>

<filename>template_thumbnail.png</filename>

<filename>favicon.ico</filename>

<filename>component.php</filename>

<filename>error.php</filename>

</files>

am missing step?

one thing observed following:

toad78 wrote:templatename/html/com_virtuemart/categories/tmpl/default.php

the directory should /templatename/html/com_virtuemart/categories (without /tmpl). hope typographical error.